@import url('https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400..900;1,9..144,400..900&family=Plus+Jakarta+Sans:ital,wght@0,300..800;1,300..800&display=swap');

/* ==========================================================================
   Doğan Koç - Personal Portfolio & Web Application
   Theme Aesthetics: Ali Abdaal Inspired (Fraunces Display + Plus Jakarta Sans)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties & Design Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Color Palette */
    --bg-main: #F9F8F6;
    --bg-card: #FFFFFF;
    --bg-card-hover: #FAFAFA;
    
    --text-main: #111827;
    --text-muted: #4B5563;
    --text-light: #6B7280;
    
    /* Highlights & Accents */
    --highlight-yellow: #FDE68A;
    --highlight-yellow-dark: #F59E0B;
    --accent-primary: #0284C7;
    --accent-primary-hover: #0369A1;
    --accent-cyan: #38BDF8;
    
    /* Card Accent Colors */
    --card-yellow-bg: #FFFBEB;
    --card-yellow-border: #FDE68A;
    --card-cyan-bg: #F0F9FF;
    --card-cyan-border: #BAE6FD;
    --card-peach-bg: #FFF1F2;
    --card-peach-border: #FECDD3;
    --card-purple-bg: #FAF5FF;
    --card-purple-border: #E9D5FF;
    --card-emerald-bg: #F0FDF4;
    --card-emerald-border: #BBF7D0;
    --card-indigo-bg: #EEF2FF;
    --card-indigo-border: #C7D2FE;
    
    --border-color: #E5E7EB;
    --border-dark: #D1D5DB;
    
    /* Typography */
    --font-heading: 'Fraunces', Georgia, serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Layout & Shadows */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 9999px;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.1);
    
    --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --bg-main: #0B0F19;
    --bg-card: #151C2C;
    --bg-card-hover: #1E293B;
    
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
    --text-light: #64748B;
    
    --card-yellow-bg: #1B2234;
    --card-yellow-border: #D97706;
    --card-cyan-bg: #132338;
    --card-cyan-border: #0284C7;
    --card-peach-bg: #271924;
    --card-peach-border: #E11D48;
    --card-purple-bg: #211933;
    --card-purple-border: #9333EA;
    --card-emerald-bg: #122821;
    --card-emerald-border: #059669;
    --card-indigo-bg: #171E36;
    --card-indigo-border: #4F46E5;
    
    --border-color: #263349;
    --border-dark: #374763;
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.6);
}

/* --------------------------------------------------------------------------
   2. Global Resets & Base Styles
   -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: var(--font-body);
    font-weight: 450;
    letter-spacing: -0.012em;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --------------------------------------------------------------------------
   3. Typography & Highlight Helpers
   -------------------------------------------------------------------------- */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-optical-sizing: auto;
    color: var(--text-main);
    line-height: 1.2;
    font-weight: 750;
    letter-spacing: -0.025em;
}

.highlight-yellow {
    background: linear-gradient(120deg, var(--highlight-yellow) 0%, #FDE047 100%);
    padding: 2px 8px;
    border-radius: 4px;
    display: inline;
}

.section-header {
    margin-bottom: 48px;
}

.section-header.center {
    text-align: center;
}

.section-subtitle {
    display: inline-block;
    font-size: 0.825rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent-primary);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    color: var(--text-main);
}

@media (min-width: 768px) {
    .section-title {
        font-size: 2.75rem;
    }
}

/* Container */
.container {
    width: 100%;
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 24px;
}

/* --------------------------------------------------------------------------
   4. Buttons & Badges
   -------------------------------------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    font-size: 0.975rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    cursor: pointer;
    border: none;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 18px;
    font-size: 0.875rem;
}

.btn-dark {
    background-color: var(--text-main);
    color: #FFFFFF;
}

.btn-dark:hover {
    background-color: #1F2937;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background-color: var(--accent-primary);
    color: #FFFFFF;
}

.btn-primary:hover {
    background-color: var(--accent-primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-cyan {
    background-color: var(--accent-cyan);
    color: #0F172A;
    font-weight: 600;
}

.btn-cyan:hover {
    background-color: #0EA5E9;
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--text-main);
    border: 1.5px solid var(--border-dark);
}

.btn-outline:hover {
    background-color: #FFFFFF;
    border-color: var(--text-main);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

.pill-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-muted);
    box-shadow: var(--shadow-sm);
    margin-bottom: 20px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background-color: #10B981;
    border-radius: 50%;
    display: inline-block;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
    70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
    100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* --------------------------------------------------------------------------
   5. Header & Navigation Bar
   -------------------------------------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(249, 248, 246, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(229, 231, 235, 0.7);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.brand-logo {
    display: flex;
    flex-direction: column;
    position: relative;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
}

.doodle-underline {
    position: absolute;
    bottom: -6px;
    left: 0;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--text-muted);
    position: relative;
    padding: 4px 0;
}

.nav-link:hover, .nav-link.active {
    color: var(--text-main);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent-primary);
    border-radius: 2px;
}

/* Nav Item with Dropdown */
.nav-item-dropdown {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.nav-item-dropdown > .nav-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
}

.nav-item-dropdown > .nav-link i.dropdown-chevron {
    font-size: 0.72rem;
    transition: transform 0.25s ease;
}

.nav-item-dropdown:hover > .nav-link i.dropdown-chevron {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    min-width: 270px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 10px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    pointer-events: none;
    z-index: 1001;
}

/* Invisible bridge so mouse doesn't drop hover when moving from link to menu */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -12px;
    left: 0;
    width: 100%;
    height: 12px;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--text-main);
    transition: var(--transition);
}

.dropdown-item:hover {
    background-color: var(--bg-main);
}

.dropdown-item:hover .dropdown-title {
    color: var(--accent-primary);
}

.dropdown-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    background-color: var(--card-cyan-bg);
    color: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    flex-shrink: 0;
    border: 1px solid var(--card-cyan-border);
}

.dropdown-text {
    display: flex;
    flex-direction: column;
}

.dropdown-title {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-main);
    transition: var(--transition);
}

.dropdown-desc {
    font-size: 0.74rem;
    color: var(--text-light);
    margin-top: 2px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.35rem;
    color: var(--text-main);
    cursor: pointer;
}

/* Subpage Header for Multi-page Structure */
.subpage-header {
    padding: 130px 0 50px 0;
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-main) 100%);
    border-bottom: 1px solid var(--border-color);
}

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.825rem;
    color: var(--text-light);
    margin-bottom: 14px;
}

.breadcrumbs a {
    color: var(--text-muted);
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: var(--accent-primary);
}

.page-title {
    font-family: var(--font-heading);
    font-size: 2.6rem;
    color: var(--text-main);
    line-height: 1.25;
    margin-bottom: 12px;
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 700px;
    line-height: 1.6;
}

@media (max-width: 880px) {
    .nav-links {
        position: fixed;
        top: 76px;
        left: 0;
        width: 100%;
        background-color: var(--bg-main);
        flex-direction: column;
        padding: 32px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-md);
        display: none;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-toggle {
        display: block;
    }

    .nav-actions .btn {
        display: none;
    }

    .nav-item-dropdown {
        width: 100%;
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-item-dropdown > .nav-link {
        width: 100%;
        justify-content: space-between;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background-color: var(--bg-card);
        margin-top: 8px;
        pointer-events: auto;
    }
}

/* --------------------------------------------------------------------------
   6. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
    padding-top: 140px;
    padding-bottom: 80px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: center;
}

@media (min-width: 992px) {
    .hero-grid {
        grid-template-columns: 1.15fr 0.85fr;
    }
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2.75rem;
    letter-spacing: -0.02em;
    margin-bottom: 24px;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 3.6rem;
    }
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 48px;
}

.hero-trust-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: nowrap;
    gap: 28px;
    padding-top: 32px;
    margin-top: 48px;
    border-top: 1px solid var(--border-color);
    width: 100%;
}

.trust-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.trust-item i {
    color: var(--accent-primary);
    font-size: 1rem;
}

.trust-divider {
    width: 5px;
    height: 5px;
    background-color: var(--border-dark);
    border-radius: 50%;
    flex-shrink: 0;
}

@media (max-width: 992px) {
    .hero-trust-bar {
        flex-wrap: wrap;
        justify-content: flex-start;
        gap: 16px;
    }
    .trust-item {
        white-space: normal;
    }
}

.hero-visual {
    display: flex;
    justify-content: center;
}

.hero-image-card {
    position: relative;
    width: 100%;
    max-width: 380px;
    background-color: var(--bg-card);
    padding: 16px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.avatar-frame {
    width: 100%;
    aspect-ratio: 1 / 1.1;
    background: linear-gradient(135deg, #FEF3C7 0%, #E0F2FE 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.profile-photo {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 25%;
    border-radius: var(--radius-md);
    display: block;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero-image-card:hover .profile-photo {
    transform: scale(1.03);
}

.avatar-placeholder {
    font-size: 5.5rem;
    color: var(--text-main);
    opacity: 0.85;
}

.floating-badge {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 10px 18px;
    background-color: var(--bg-card);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    line-height: 1.35;
    z-index: 2;
    transition: var(--transition);
}

.floating-badge:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.badge-label {
    display: block;
    font-size: 0.68rem;
    color: var(--text-light);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-val {
    display: block;
    font-size: 0.875rem;
    color: var(--text-main);
    font-weight: 700;
    font-family: var(--font-body);
}

.badge-top-right {
    top: -16px;
    right: -16px;
}

.badge-bottom-left {
    bottom: -16px;
    left: -16px;
}

/* --------------------------------------------------------------------------
   7. Tech Logos Ticker Strip
   -------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------
   7. Academic & Professional Ecosystem Marquee Strip
   -------------------------------------------------------------------------- */
.tech-strip-section {
    padding: 52px 0 44px 0;
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    overflow: hidden;
}

.tech-strip-title {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 30px;
}

.marquee-container {
    overflow: hidden;
    position: relative;
    width: 100%;
    padding: 8px 0 16px 0;
    -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.marquee-track {
    display: flex;
    align-items: center;
    gap: 24px;
    width: max-content;
    animation: marqueeScroll 40s linear infinite;
}

.marquee-track:hover {
    animation-play-state: paused;
}

@keyframes marqueeScroll {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.ecosystem-card {
    flex: 0 0 auto;
    width: 310px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 18px 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 10px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.ecosystem-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.eco-logo-wrap {
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.eco-logo {
    max-height: 36px;
    max-width: 150px;
    object-fit: contain;
    transition: var(--transition);
}

[data-theme="dark"] .eco-logo-pforzheim,
[data-theme="dark"] .eco-logo-sgh,
[data-theme="dark"] .eco-logo-harman,
[data-theme="dark"] .eco-logo-bilkent,
[data-theme="dark"] .eco-logo-avanade {
    filter: brightness(0) invert(1);
}

.eco-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    width: 100%;
}

.eco-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    margin: 0;
}

.eco-badge {
    font-size: 0.775rem;
    font-weight: 600;
    color: var(--accent-primary);
    background-color: rgba(2, 132, 199, 0.08);
    border: 1px solid rgba(2, 132, 199, 0.2);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    white-space: nowrap;
    letter-spacing: 0.01em;
}

/* --------------------------------------------------------------------------
   8. Feature Highlights Grid (Services / Offerings)
   -------------------------------------------------------------------------- */
.features-section {
    padding: 96px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.feature-card {
    padding: 32px 28px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.card-yellow {
    background-color: var(--card-yellow-bg);
    border-color: var(--card-yellow-border);
}

.card-cyan {
    background-color: var(--card-cyan-bg);
    border-color: var(--card-cyan-border);
}

.card-peach {
    background-color: var(--card-peach-bg);
    border-color: var(--card-peach-border);
}

.card-purple {
    background-color: var(--card-purple-bg);
    border-color: var(--card-purple-border);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background-color: #FFFFFF;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    color: var(--text-main);
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.feature-card h3 {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.925rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    flex-grow: 1;
}

.feature-link {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.feature-link:hover {
    gap: 10px;
    color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   9. About Me Section
   -------------------------------------------------------------------------- */
.about-section {
    padding: 40px 0 96px;
}

.about-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px 36px;
    box-shadow: var(--shadow-md);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
}

@media (min-width: 992px) {
    .about-grid {
        grid-template-columns: 1.25fr 0.75fr;
    }
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-muted);
    margin-bottom: 20px;
}

.stats-counter-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 36px;
    padding-top: 28px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-fast);
}

.stat-item:hover {
    transform: translateY(-2px);
}

.stat-number, .highlight-metric {
    font-family: var(--font-heading);
    font-size: 2.65rem;
    font-weight: 800;
    color: var(--accent-primary);
    line-height: 1.1;
    margin-bottom: 6px;
    letter-spacing: -0.02em;
    display: inline-block;
    transition: color var(--transition-fast);
}

.stat-item:hover .stat-number,
.stat-item:hover .highlight-metric {
    color: var(--accent-primary-hover);
}

.stat-label {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.3;
}

.stat-sub {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-top: 3px;
    line-height: 1.4;
}

@media (max-width: 640px) {
    .stats-counter-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

.personal-info-card {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
}

.personal-info-card h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.info-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.925rem;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.info-list i {
    color: var(--accent-primary);
    width: 20px;
    text-align: center;
}

.card-action {
    margin-top: 24px;
}

/* --------------------------------------------------------------------------
   10. Skills Section
   -------------------------------------------------------------------------- */
.skills-section {
    padding: 96px 0;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.skill-category-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-category-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.skill-category-header {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 20px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border-color);
}

.skill-icon {
    font-size: 1.35rem;
    color: var(--accent-primary);
}

.skill-category-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-pill {
    padding: 6px 14px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.825rem;
    font-weight: 500;
    color: var(--text-main);
    transition: var(--transition);
}

.tag-pill:hover {
    background-color: var(--accent-primary) !important;
    color: #FFFFFF !important;
    border-color: var(--accent-primary) !important;
    transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   11. Experience & Education Timeline
   -------------------------------------------------------------------------- */
.experience-section {
    padding: 96px 0;
}

.timeline-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-group-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-main);
}

.timeline-group-title i {
    color: var(--accent-primary);
}

/* Authentic Vertical Timeline Track */
.timeline-track {
    position: relative;
    padding-left: 36px;
}

.timeline-track::before {
    content: '';
    position: absolute;
    top: 14px;
    bottom: 24px;
    left: 11px;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, rgba(2, 132, 199, 0.25) 85%, transparent 100%);
    border-radius: 2px;
}

.timeline-item {
    position: relative;
    margin-bottom: 28px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

/* Timeline Milestone Node */
.timeline-node {
    position: absolute;
    left: -36px;
    top: 18px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--bg-card);
    border: 2px solid var(--accent-primary);
    box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: var(--transition);
}

.timeline-node::after {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-primary);
    transition: var(--transition);
}

.timeline-item:hover .timeline-node {
    transform: scale(1.18);
    box-shadow: 0 0 0 6px rgba(2, 132, 199, 0.2);
    border-color: var(--accent-primary-hover);
}

.timeline-item:hover .timeline-node::after {
    transform: scale(1.2);
}

.timeline-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.timeline-item:hover .timeline-card {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
    border-color: rgba(2, 132, 199, 0.35);
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 14px;
}

.timeline-title-row {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.timeline-logo-wrap {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: var(--radius-sm);
    background-color: #FFFFFF;
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    flex-shrink: 0;
}

[data-theme="dark"] .timeline-logo-wrap {
    background-color: #FFFFFF;
    border-color: rgba(255, 255, 255, 0.2);
}

.timeline-logo {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.timeline-title-meta {
    display: flex;
    flex-direction: column;
}

.role-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
}

.company-name {
    font-size: 0.875rem;
    color: var(--accent-primary);
    font-weight: 600;
    display: block;
    margin-top: 2px;
}

.timeline-date {
    font-size: 0.8rem;
    font-weight: 700;
    padding: 4px 12px;
    background-color: var(--bg-main);
    border-radius: var(--radius-full);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.timeline-description {
    font-size: 0.95rem;
    color: var(--text-muted);
    margin-bottom: 14px;
    line-height: 1.6;
}

.timeline-bullets {
    padding-left: 20px;
    list-style-type: disc;
    margin-bottom: 12px;
}

.timeline-bullets li {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    line-height: 1.55;
}

.timeline-bullets li strong {
    color: var(--text-main);
    font-weight: 600;
}

/* Timeline Badges Row */
.timeline-badges-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 6px;
}

.timeline-badge {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    background-color: var(--bg-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.timeline-badge-accent {
    background-color: rgba(56, 189, 248, 0.1);
    color: var(--accent-primary);
    border-color: rgba(56, 189, 248, 0.3);
}

.timeline-badge-amber {
    background-color: rgba(245, 158, 11, 0.1);
    color: #D97706;
    border-color: rgba(245, 158, 11, 0.3);
}

[data-theme="dark"] .timeline-badge-amber {
    color: #FBBF24;
    background-color: rgba(245, 158, 11, 0.15);
}

/* Timeline Spotlight / Callout Box */
.timeline-callout {
    margin: 12px 0;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--accent-primary);
    font-size: 0.88rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.timeline-callout.amber-border {
    border-left-color: var(--highlight-yellow-dark);
}

.timeline-callout-title {
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 4px;
    display: block;
    color: var(--text-main);
}

.timeline-callout p {
    margin: 0;
    font-size: 0.88rem;
}

/* Timeline Tags Row */
.timeline-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px dashed var(--border-color);
}

.timeline-tag {
    font-size: 0.72rem;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 4px;
    background-color: var(--bg-main);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.timeline-tag:hover {
    border-color: var(--accent-primary);
    color: var(--text-main);
}

.education-track .timeline-item:hover .timeline-card {
    border-color: rgba(245, 158, 11, 0.45);
}

@media (max-width: 640px) {
    .timeline-card {
        padding: 18px 18px;
    }
    .timeline-title-row {
        gap: 12px;
    }
    .timeline-logo-wrap {
        width: 42px;
        height: 42px;
        min-width: 42px;
    }
    .role-title {
        font-size: 1.05rem;
    }
}

/* Academic Track specific styling (Orange/Amber Theme) */
#education .section-subtitle {
    color: var(--highlight-yellow-dark);
}

#education .timeline-group-title i {
    color: var(--highlight-yellow-dark);
}

.education-track::before {
    background: linear-gradient(180deg, var(--highlight-yellow-dark) 0%, rgba(245, 158, 11, 0.25) 85%, transparent 100%);
}

.education-track .timeline-node {
    border-color: var(--highlight-yellow-dark);
    box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
}

.education-track .timeline-node::after {
    background-color: var(--highlight-yellow-dark);
}

.education-track .company-name {
    color: var(--highlight-yellow-dark);
}

.education-track .timeline-item:hover .timeline-node {
    border-color: #D97706;
    box-shadow: 0 0 0 6px rgba(245, 158, 11, 0.25);
}

.education-track .timeline-item:hover .timeline-card {
    border-color: rgba(245, 158, 11, 0.45);
}

/* --------------------------------------------------------------------------
   12. Projects Section
   -------------------------------------------------------------------------- */
.projects-section {
    padding: 96px 0;
}

.project-filters {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 8px 20px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--text-main);
    color: #FFFFFF;
    border-color: var(--text-main);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.project-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.project-image-box {
    position: relative;
    height: 190px;
    width: 100%;
    overflow: hidden;
    background-color: #0F172A;
}

.project-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition);
    display: block;
}

.project-card:hover .project-img {
    transform: scale(1.04);
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #FFFFFF;
}

.bg-gradient-1 { background: linear-gradient(135deg, #0284C7 0%, #38BDF8 100%); }
.bg-gradient-2 { background: linear-gradient(135deg, #111827 0%, #374151 100%); }
.bg-gradient-3 { background: linear-gradient(135deg, #F59E0B 0%, #FBBF24 100%); }
.bg-gradient-purple { background: linear-gradient(135deg, #7C3AED 0%, #A78BFA 100%); }
.bg-gradient-emerald { background: linear-gradient(135deg, #059669 0%, #34D399 100%); }
.bg-gradient-amber { background: linear-gradient(135deg, #D97706 0%, #FBBF24 100%); }
.bg-gradient-indigo { background: linear-gradient(135deg, #4F46E5 0%, #818CF8 100%); }
.bg-gradient-rose { background: linear-gradient(135deg, #E11D48 0%, #FB7185 100%); }
.bg-gradient-teal { background: linear-gradient(135deg, #0D9488 0%, #2DD4BF 100%); }

.project-achievements {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
    font-size: 0.835rem;
    color: var(--text-muted);
}

.project-achievements li {
    position: relative;
    padding-left: 18px;
    margin-bottom: 6px;
    line-height: 1.45;
}

.project-achievements li::before {
    content: '•';
    position: absolute;
    left: 4px;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1.1rem;
    line-height: 1;
}

.project-badge {
    position: absolute;
    top: 14px;
    right: 14px;
    padding: 4px 12px;
    background-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-main);
}

.project-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-title {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 20px;
}

.project-tags span {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    background-color: var(--bg-main);
    border-radius: 4px;
    color: var(--text-muted);
}

.project-footer {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.project-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.project-link:hover {
    color: var(--text-main);
}

.project-link.primary {
    color: var(--accent-primary);
    margin-left: auto;
}

/* --------------------------------------------------------------------------
   13. Contact & Newsletter Section
   -------------------------------------------------------------------------- */
.contact-section {
    padding: 96px 0;
}

.newsletter-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.newsletter-grid {
    display: grid;
    grid-template-columns: 1fr;
}

@media (min-width: 992px) {
    .newsletter-grid {
        grid-template-columns: 1.25fr 0.75fr;
    }
}

.newsletter-content {
    padding: 48px;
}

.newsletter-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.pill-tag {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent-primary);
}

.newsletter-title {
    font-family: var(--font-heading);
    font-size: 2.25rem;
    margin-bottom: 14px;
}

.newsletter-desc {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.form-group-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 600px) {
    .form-group-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-control {
    width: 100%;
    padding: 14px 18px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--text-main);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-primary);
    background-color: #FFFFFF;
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.form-feedback {
    margin-top: 14px;
    font-size: 0.9rem;
    font-weight: 600;
}

.contact-info-panel {
    background-color: var(--card-yellow-bg);
    border-left: 1px solid var(--card-yellow-border);
    padding: 48px 36px;
    display: flex;
    flex-direction: column;
}

.contact-info-panel h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.contact-info-panel p {
    font-size: 0.925rem;
    color: var(--text-muted);
    margin-bottom: 32px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
}

.method-icon {
    width: 44px;
    height: 44px;
    background-color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
    box-shadow: var(--shadow-sm);
}

.method-label {
    display: block;
    font-size: 0.775rem;
    font-weight: 700;
    color: var(--text-light);
    text-transform: uppercase;
}

.method-val {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
}

.social-links-box {
    margin-top: auto;
    padding-top: 24px;
    border-top: 1px solid rgba(0,0,0,0.06);
}

.social-title {
    display: block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 14px;
    text-transform: uppercase;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.social-icons a {
    width: 38px;
    height: 38px;
    background-color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.social-icons a:hover {
    background-color: var(--accent-primary);
    color: #FFFFFF;
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   14. Footer
   -------------------------------------------------------------------------- */
.footer {
    background-color: #FFFFFF;
    border-top: 1px solid var(--border-color);
    padding: 40px 0;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 700;
}

.copyright {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 4px;
}

.footer-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-links a:hover {
    color: var(--text-main);
}

.back-to-top {
    width: 42px;
    height: 42px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    transition: var(--transition);
}

.back-to-top:hover {
    background-color: var(--text-main);
    color: #FFFFFF;
    transform: translateY(-3px);
}

/* --------------------------------------------------------------------------
   14. Theme Toggle Switcher
   -------------------------------------------------------------------------- */
.theme-toggle-btn {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.05rem;
    transition: var(--transition);
}

.theme-toggle-btn:hover {
    background-color: var(--bg-main);
    transform: rotate(20deg) scale(1.05);
    border-color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   15. Interactive NII (Narrative Inconsistency Index) Visualizer
   -------------------------------------------------------------------------- */
.nii-visualizer-box {
    margin-top: 28px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: var(--shadow-sm);
}

.nii-vis-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 20px;
}

.nii-vis-title {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nii-selector {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.nii-select-btn {
    padding: 6px 14px;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background-color: var(--bg-main);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.nii-select-btn.active, .nii-select-btn:hover {
    background-color: var(--text-main);
    color: #FFFFFF;
    border-color: var(--text-main);
}

.nii-comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

@media (min-width: 768px) {
    .nii-comparison-grid {
        grid-template-columns: 1fr auto 1fr;
        align-items: center;
    }
}

.nii-pane {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
}

.nii-pane-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.badge-mda {
    background-color: #DEF7EC;
    color: #03543F;
}

.badge-risk {
    background-color: #FDE8E8;
    color: #9B1C1C;
}

.nii-pane-text {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 12px;
}

.nii-tone-score {
    font-size: 0.8rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nii-divider-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--card-yellow-bg);
    border: 1px solid var(--card-yellow-border);
    color: var(--highlight-yellow-dark);
    font-weight: 700;
    margin: 0 auto;
}

.nii-meter-wrapper {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 18px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.nii-meter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nii-meter-label {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-main);
}

.nii-meter-val {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: #E11D48;
}

.nii-bar-track {
    width: 100%;
    height: 12px;
    background-color: var(--border-color);
    border-radius: var(--radius-full);
    overflow: hidden;
    position: relative;
}

.nii-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #10B981 0%, #F59E0B 50%, #EF4444 100%);
    border-radius: var(--radius-full);
    transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.nii-risk-assessment {
    display: flex;
    justify-content: space-between;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   16. Articles & Writing Section (Ali Abdaal Editorial Style)
   -------------------------------------------------------------------------- */
.articles-section {
    padding: 96px 0;
    background-color: var(--bg-main);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 28px;
}

.article-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.article-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 600;
}

.article-pill {
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 700;
}

.pill-ai { background-color: var(--card-cyan-bg); color: var(--accent-primary); }
.pill-finance { background-color: var(--card-yellow-bg); color: var(--highlight-yellow-dark); }
.pill-bi { background-color: var(--card-purple-bg); color: #9333EA; }

.article-title {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    line-height: 1.35;
    margin-bottom: 12px;
    color: var(--text-main);
    transition: var(--transition);
}

.article-card:hover .article-title {
    color: var(--accent-primary);
}

.article-excerpt {
    font-size: 0.925rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.article-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-primary);
}

/* --------------------------------------------------------------------------
   17. Tools, Tech Stack & Honors Sections
   -------------------------------------------------------------------------- */
.tools-section {
    padding: 72px 0;
}

.tools-section-toolkit {
    background-color: var(--bg-main);
}

.tools-section-honors {
    background-color: var(--bg-card);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.tools-section-certs {
    background-color: var(--bg-main);
}

.tech-categories-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

@media (max-width: 880px) {
    .tech-categories-grid {
        grid-template-columns: 1fr;
    }
}

.tech-cat-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 26px 24px;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.tech-cat-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-primary);
}

.tech-cat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.tech-cat-box-cyan::before { background: linear-gradient(to right, #0284C7, #38BDF8); }
.tech-cat-box-purple::before { background: linear-gradient(to right, #7C3AED, #A78BFA); }
.tech-cat-box-amber::before { background: linear-gradient(to right, #D97706, #FBBF24); }
.tech-cat-box-emerald::before { background: linear-gradient(to right, #059669, #34D399); }

.tech-cat-box-cyan .tech-cat-title i { color: #0284C7; }
.tech-cat-box-purple .tech-cat-title i { color: #7C3AED; }
.tech-cat-box-amber .tech-cat-title i { color: #D97706; }
.tech-cat-box-emerald .tech-cat-title i { color: #059669; }

.tech-cat-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-main);
}

.tech-badge-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.825rem;
    font-weight: 600;
    color: var(--text-main);
    box-shadow: 0 1px 2px rgba(0,0,0,0.02);
    transition: var(--transition);
}

.tech-badge:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Honors & Academic Distinctions Showcase */
.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.honor-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: var(--transition);
    overflow: hidden;
}

.honor-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.honor-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    transition: var(--transition);
}

/* Color Variant: Cyan (Bilkent Faculty Rank) */
.honor-card-cyan {
    background-color: var(--card-cyan-bg);
    border-color: var(--card-cyan-border);
}
.honor-card-cyan::before { background: linear-gradient(to bottom, #0284C7, #38BDF8); }
.honor-card-cyan .honor-metric { color: #0284C7; }
.honor-card-cyan .honor-tag {
    background-color: rgba(2, 132, 199, 0.12);
    color: #0284C7;
    border-color: rgba(2, 132, 199, 0.28);
}

/* Color Variant: Emerald (Pforzheim Master Degree) */
.honor-card-emerald {
    background-color: var(--card-emerald-bg);
    border-color: var(--card-emerald-border);
}
.honor-card-emerald::before { background: linear-gradient(to bottom, #059669, #34D399); }
.honor-card-emerald .honor-metric { color: #059669; }
.honor-card-emerald .honor-tag {
    background-color: rgba(5, 150, 105, 0.12);
    color: #059669;
    border-color: rgba(5, 150, 105, 0.28);
}

/* Color Variant: Purple (Master's Thesis NII) */
.honor-card-purple {
    background-color: var(--card-purple-bg);
    border-color: var(--card-purple-border);
}
.honor-card-purple::before { background: linear-gradient(to bottom, #7C3AED, #A78BFA); }
.honor-card-purple .honor-metric { color: #7C3AED; }
.honor-card-purple .honor-tag {
    background-color: rgba(124, 58, 237, 0.12);
    color: #7C3AED;
    border-color: rgba(124, 58, 237, 0.28);
}

/* Color Variant: Amber (National Exam YKS 888th) */
.honor-card-amber {
    background-color: var(--card-yellow-bg);
    border-color: var(--card-yellow-border);
}
.honor-card-amber::before { background: linear-gradient(to bottom, #D97706, #FBBF24); }
.honor-card-amber .honor-metric { color: #D97706; }
.honor-card-amber .honor-tag {
    background-color: rgba(217, 119, 6, 0.12);
    color: #D97706;
    border-color: rgba(217, 119, 6, 0.28);
}

/* Color Variant: Indigo (Project Fair 2nd Place) */
.honor-card-indigo {
    background-color: var(--card-indigo-bg);
    border-color: var(--card-indigo-border);
}
.honor-card-indigo::before { background: linear-gradient(to bottom, #4F46E5, #818CF8); }
.honor-card-indigo .honor-metric { color: #4F46E5; }
.honor-card-indigo .honor-tag {
    background-color: rgba(79, 70, 229, 0.12);
    color: #4F46E5;
    border-color: rgba(79, 70, 229, 0.28);
}

/* Color Variant: Peach / Rose (Military High School Exam 537th) */
.honor-card-peach {
    background-color: var(--card-peach-bg);
    border-color: var(--card-peach-border);
}
.honor-card-peach::before { background: linear-gradient(to bottom, #E11D48, #FB7185); }
.honor-card-peach .honor-metric { color: #E11D48; }
.honor-card-peach .honor-tag {
    background-color: rgba(225, 29, 72, 0.12);
    color: #E11D48;
    border-color: rgba(225, 29, 72, 0.28);
}

.honor-header {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin-bottom: 12px;
}

.honor-metric {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.honor-tag {
    font-size: 0.725rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    border: 1px solid transparent;
}

.honor-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    line-height: 1.35;
}

.honor-sub {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    margin-bottom: 12px;
}

.honor-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.55;
    margin-top: auto;
}

/* Certifications Grid */
.certs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

@media (max-width: 880px) {
    .certs-grid {
        grid-template-columns: 1fr;
    }
}

.cert-card {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 22px;
    display: flex;
    gap: 16px;
    align-items: flex-start;
    transition: var(--transition);
}

.cert-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.cert-card-cyan {
    background-color: var(--card-cyan-bg);
    border-color: var(--card-cyan-border);
}
.cert-card-cyan .cert-icon {
    background: rgba(2, 132, 199, 0.12);
    color: #0284C7;
    border: 1px solid rgba(2, 132, 199, 0.25);
}

.cert-card-emerald {
    background-color: var(--card-emerald-bg);
    border-color: var(--card-emerald-border);
}
.cert-card-emerald .cert-icon {
    background: rgba(5, 150, 105, 0.12);
    color: #059669;
    border: 1px solid rgba(5, 150, 105, 0.25);
}

.cert-card-amber {
    background-color: var(--card-yellow-bg);
    border-color: var(--card-yellow-border);
}
.cert-card-amber .cert-icon {
    background: rgba(217, 119, 6, 0.12);
    color: #D97706;
    border: 1px solid rgba(217, 119, 6, 0.25);
}

.cert-card-indigo {
    background-color: var(--card-indigo-bg);
    border-color: var(--card-indigo-border);
}
.cert-card-indigo .cert-icon {
    background: rgba(79, 70, 229, 0.12);
    color: #4F46E5;
    border: 1px solid rgba(79, 70, 229, 0.25);
}

.cert-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    flex-shrink: 0;
}

.cert-info h4 {
    font-size: 0.98rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
    line-height: 1.35;
}

.cert-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 8px;
}

.cert-meta span {
    color: var(--text-light);
    font-weight: 400;
}

.cert-desc {
    font-size: 0.825rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* --------------------------------------------------------------------------
   18. Interactive Modals (Thesis & Project Showcase)
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.25s ease-out forwards;
}

.modal-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.75);
    backdrop-filter: blur(8px);
}

.modal-dialog {
    position: relative;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    z-index: 10;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    background-color: var(--bg-card);
    z-index: 5;
}

.modal-title {
    font-family: var(--font-heading);
    font-size: 1.45rem;
    color: var(--text-main);
}

.modal-close-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.1rem;
    transition: var(--transition);
}

.modal-close-btn:hover {
    background-color: #EF4444;
    color: #FFFFFF;
    border-color: #EF4444;
}

.modal-body {
    padding: 28px;
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
}

.modal-body h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 20px 0 10px 0;
}

.modal-body h4:first-child {
    margin-top: 0;
}

.modal-footer {
    padding: 20px 28px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    background-color: var(--bg-main);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* Custom Gradients for Diverse Project Types */
.bg-gradient-purple {
    background: linear-gradient(135deg, #6366F1 0%, #A855F7 50%, #EC4899 100%);
}
.bg-gradient-emerald {
    background: linear-gradient(135deg, #059669 0%, #10B981 50%, #34D399 100%);
}
.bg-gradient-amber {
    background: linear-gradient(135deg, #D97706 0%, #F59E0B 50%, #FBBF24 100%);
}
.bg-gradient-indigo {
    background: linear-gradient(135deg, #312E81 0%, #4F46E5 50%, #818CF8 100%);
}
.bg-gradient-rose {
    background: linear-gradient(135deg, #E11D48 0%, #F43F5E 50%, #FB7185 100%);
}
.bg-gradient-teal {
    background: linear-gradient(135deg, #0D9488 0%, #14B8A6 50%, #2DD4BF 100%);
}

/* Project Achievements Bullet List */
.project-achievements {
    margin: 12px 0 16px 0;
    padding-left: 18px;
    list-style-type: disc;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.project-achievements li {
    font-size: 0.84rem;
    line-height: 1.45;
    color: var(--text-muted);
}

.project-achievements li strong {
    color: var(--text-main);
    font-weight: 600;
}

/* Project Modal Custom Details */
.pm-meta-block {
    background-color: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}

.pm-meta-badge {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 4px 10px;
    border-radius: 9999px;
    background-color: var(--accent-primary-light);
    color: var(--accent-primary);
    border: 1px solid rgba(14, 165, 233, 0.3);
}

.pm-section-title {
    font-size: 0.88rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pm-section-title i {
    color: var(--accent-primary);
}

.pm-bullets {
    padding-left: 20px;
    margin: 0 0 20px 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.pm-bullets li {
    font-size: 0.92rem;
    line-height: 1.55;
    color: var(--text-main);
}

.pm-banner-wrap {
    width: 100%;
    height: 230px;
    overflow: hidden;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    background-color: #0F172A;
}

.pm-banner-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}