/* ============================================
   Premium FAANG-Level Portfolio Stylesheet
   Features: Glassmorphism, Dark/Light Theme, Animations
   ============================================ */

/* ========== CSS Variables (Theme Support) ========== */
:root {
    /* Dark Theme (Default) */
    --bg-primary: #0a0e27;
    --bg-secondary: #151932;
    --bg-tertiary: #1e2442;
    --text-primary: #ffffff;
    --text-secondary: #b4b9d1;
    --text-muted: #7c82a3;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --glass-bg: rgba(21, 25, 50, 0.85);
    --glass-border: rgba(255, 255, 255, 0.15);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.3);
}

[data-theme="light"] {
    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1d29;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.2);
}

/* ========== Global Styles ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}/* ========== Profile Picture ========== */
.profile-picture-container {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
}

.profile-picture {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5), 0 0 0 8px rgba(99, 102, 241, 0.1);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    display: block;
    position: relative;
    z-index: 2;
}

.profile-picture:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.7), 0 0 0 12px rgba(99, 102, 241, 0.15);
    border-color: var(--accent-secondary);
}

.profile-picture-container::before {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border-radius: 50%;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
}

.profile-picture-container:hover::before {
    opacity: 0.3;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.1;
    }
}

.profile-picture-placeholder {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid var(--accent-primary);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5);
    color: white;
    font-size: 2.5rem;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    transition: all 0.4s ease;
}

.profile-picture-placeholder.hidden {
    display: none;
}

.hero-name-container {
    flex-wrap: wrap;
}

/* ========== Theme Toggle in Navbar ========== */
.btn-theme-nav {
    background: var(--glass-bg);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    font-size: 1.1rem;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    margin-left: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-theme-nav:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    transform: scale(1.1);
    box-shadow: var(--shadow-md);
}

.btn-theme-nav:focus {
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

/* ========== Navigation ========== */
.navbar {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.navbar.scrolled {
    background: rgba(10, 14, 39, 0.95) !important;
    box-shadow: var(--shadow-md);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(255, 255, 255, 0.95) !important;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary) !important;
    font-family: 'Space Grotesk', sans-serif;
}

.navbar-nav .nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    border-radius: 8px;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent-primary) !important;
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 3px;
    background: var(--accent-gradient);
    border-radius: 2px;
    transition: width 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
    width: 70%;
}

/* ========== Hero Section ========== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0.1;
    z-index: 0;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-block;
}

.badge-text {
    background: var(--glass-bg);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 600;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--text-primary);
    opacity: 0.95;
    min-height: 2.5rem;
    margin-bottom: 1.5rem;
}

.typing-text {
    color: var(--text-primary);
    font-weight: 500;
}

.cursor {
    animation: blink 1s infinite;
    color: var(--accent-primary);
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-primary);
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.9;
    font-weight: 400;
}

.hero-buttons {
    margin-top: 2rem;
}

.btn-primary-custom {
    background: var(--accent-gradient);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-primary-custom::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary-custom:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary-custom:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg), var(--shadow-glow), 0 0 40px rgba(99, 102, 241, 0.4);
    color: white;
}

.btn-primary-custom:active {
    transform: translateY(-1px) scale(1.02);
}

.btn-primary-custom span {
    position: relative;
    z-index: 1;
}

.btn-outline-custom {
    background: var(--glass-bg);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    border: 2px solid var(--glass-border);
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.75rem 2rem;
    border-radius: 50px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
}

.btn-outline-custom::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--accent-primary);
    transition: left 0.3s ease;
    z-index: 0;
}

.btn-outline-custom:hover::before {
    left: 0;
}

.btn-outline-custom:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white !important;
    transform: translateY(-3px) scale(1.05);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(99, 102, 241, 0.3);
}

.btn-outline-custom * {
    position: relative;
    z-index: 1;
    color: inherit;
}

.btn-outline-custom span,
.btn-outline-custom i {
    position: relative;
    z-index: 1;
    color: inherit;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
}

.scroll-arrow {
    color: var(--text-primary);
    font-size: 2rem;
    animation: bounce 2s infinite;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.scroll-arrow:hover {
    opacity: 1;
    color: var(--accent-primary);
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    40% {
        transform: translateX(-50%) translateY(-10px);
    }

    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ========== Glassmorphism Cards ========== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.glass-card * {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.glass-card:hover {
    transform: translateY(-10px) scale(1.03);
    box-shadow: var(--shadow-lg), var(--shadow-glow), 0 0 40px rgba(99, 102, 241, 0.2);
    border-color: var(--accent-primary);
    background: var(--glass-bg);
}

.glass-card:active {
    transform: translateY(-6px) scale(1.01);
}

.glass-card {
    position: relative;
    overflow: hidden;
}

.glass-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.glass-card:hover::after {
    opacity: 1;
}

.glass-card-modal {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--glass-border);
    border-radius: 16px;
}

.glass-card-modal .modal-body {
    color: var(--text-primary);
}

.glass-card-modal .modal-body p,
.glass-card-modal .modal-body li {
    color: var(--text-primary);
    opacity: 0.95;
}

.glass-card-modal .modal-body h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

/* ========== Section Styles ========== */
.section-padding {
    padding: 100px 0;
}

.bg-section {
    background-color: var(--bg-secondary);
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    line-height: 1.1;
}

.title-underline {
    width: 100px;
    height: 5px;
    background: var(--accent-gradient);
    border-radius: 3px;
    margin-bottom: 2rem;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
}

/* ========== About Section ========== */
.about-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
}

.about-content p {
    color: var(--text-primary);
    opacity: 0.95;
}

.about-content .lead {
    color: var(--text-primary);
    font-weight: 500;
}

.about-stats .stat-card {
    text-align: center;
    padding: 1.5rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
    letter-spacing: -1px;
}

.stat-label {
    color: var(--text-primary);
    opacity: 0.8;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ========== Skills Section ========== */
.skill-category {
    margin-bottom: 3rem;
}

.skill-category-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.skill-card {
    text-align: center;
    height: 100%;
}

.skill-icon {
    font-size: 3rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.skill-card h5 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-weight: 600;
}

.skill-progress {
    width: 100%;
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-bar-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 10px;
    width: 0;
    transition: width 1s ease;
}

.skill-level {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ========== Experience Timeline ========== */
.timeline {
    position: relative;
    padding-left: 3rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--accent-gradient);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.timeline-item.fade-in {
    opacity: 1;
    transform: translateY(0);
}

.timeline-marker {
    position: absolute;
    left: -3.5rem;
    top: 0.5rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    box-shadow: 0 0 0 4px var(--accent-primary);
}

.timeline-content {
    margin-left: 1rem;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.timeline-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.timeline-badge {
    background: var(--accent-primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.timeline-content h4 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-size: 1.4rem;
}

.timeline-content h5 {
    color: var(--accent-primary);
    margin-bottom: 1rem;
    font-weight: 700;
    font-size: 1.1rem;
}

.experience-list {
    list-style: none;
    padding: 0;
}

.experience-list li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-secondary);
    line-height: 1.7;
}

.experience-list li::before {
    content: '\25B8';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1.2rem;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 0.5rem 1.1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
    display: inline-block;
}

.tech-tag:not(:hover) {
    opacity: 0.9;
}

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

/* ========== Projects Section ========== */
.project-filters {
    margin-bottom: 3rem;
}

.filter-btn {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-secondary);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    margin: 0 0.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    cursor: pointer;
}

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

.project-item {
    opacity: 1;
    transition: all 0.3s ease;
}

.project-item.hidden {
    display: none;
}

.project-card {
    cursor: pointer;
    height: 100%;
    overflow: hidden;
    position: relative;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.project-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--accent-gradient);
    opacity: 0;
    border-radius: 16px;
    transition: opacity 0.4s ease;
    z-index: 0;
}

.project-card:hover {
    transform: translateY(-12px) scale(1.03);
}

.project-card:hover::before {
    opacity: 0.08;
}

.project-card>* {
    position: relative;
    z-index: 1;
}

.project-card:active {
    transform: translateY(-8px) scale(1.01);
}

.project-image {
    height: 200px;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    margin-bottom: 1.5rem;
    background: var(--accent-gradient);
}

.project-image-1 {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
}

.project-image-2 {
    background: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
}

.project-image-3 {
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
}

.project-image-4 {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
}

.project-overlay i {
    font-size: 3rem;
    color: white;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--accent-primary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.project-content h4 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.project-content p {
    color: var(--text-primary);
    opacity: 0.9;
    margin-bottom: 1rem;
    line-height: 1.7;
    font-size: 0.95rem;
}

.project-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1rem;
}

.project-metrics span {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
    opacity: 0.9;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 0.4rem 0.8rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.project-metrics span:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
}

.project-metrics i {
    color: var(--accent-primary);
}

/* ========== System Design Section ========== */
.accordion-item {
    background: transparent;
    border: none;
    margin-bottom: 1rem;
}

.accordion-button {
    background: var(--glass-bg) !important;
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    border: 1px solid var(--glass-border);
    color: var(--text-primary) !important;
    font-weight: 600;
    border-radius: 12px !important;
    padding: 1.25rem 1.5rem;
}

.accordion-button:not(.collapsed) {
    background: var(--accent-primary) !important;
    color: white !important;
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

.accordion-body {
    background: var(--bg-tertiary);
    border-radius: 0 0 12px 12px;
    padding: 2rem;
    color: var(--text-primary);
}

.accordion-body p,
.accordion-body li {
    color: var(--text-primary);
    opacity: 0.95;
}

.architecture-content h5 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 600;
}

.architecture-content ul {
    list-style: none;
    padding: 0;
}

.architecture-content ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-primary);
    opacity: 0.95;
}

.architecture-content ul li::before {
    content: '\25B8';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
}

.arch-diagram {
    background: var(--bg-primary);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    margin: 1.5rem 0;
}

.arch-layer {
    padding: 1rem;
    margin: 0.5rem 0;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--glass-border);
}

.arch-layer strong {
    display: block;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.arch-components {
    color: var(--text-primary);
    opacity: 0.9;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    font-weight: 500;
}

.arch-arrow {
    text-align: center;
    color: var(--accent-primary);
    font-size: 1.5rem;
    margin: 0.5rem 0;
}

/* ========== Metrics Section ========== */
.metric-card {
    padding: 2rem;
    text-align: center;
    height: 100%;
}

.metric-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.metric-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
    letter-spacing: -1px;
}

.metric-label {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    letter-spacing: 0.3px;
}

.metric-detail {
    color: var(--text-primary);
    opacity: 0.75;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* ========== Contact Section ========== */
.contact-card {
    padding: 3rem;
    background: var(--bg-secondary) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    border: 2px solid var(--glass-border);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.5s ease;
}

.contact-card:hover::before {
    left: 100%;
}

.contact-info h5 {
    color: var(--text-primary);
    margin-bottom: 2rem;
    font-weight: 600;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-top: 0.25rem;
}

.contact-item strong {
    display: block;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.contact-item a,
.contact-item span {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.contact-item small {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.contact-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-primary);
    font-size: 1.5rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    transform: translateY(-3px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.contact-form .form-control {
    background: var(--bg-tertiary) !important;
    border: 2px solid var(--glass-border) !important;
    color: var(--text-primary) !important;
    border-radius: 12px;
    padding: 1.1rem 1.2rem;
    font-size: 1rem;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    transition: all 0.3s ease;
    filter: none !important;
    backdrop-filter: none !important;
}

.contact-form .form-control:focus {
    background: var(--bg-tertiary) !important;
    border-color: var(--accent-primary) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15), 0 4px 12px rgba(99, 102, 241, 0.2) !important;
    outline: none;
    transform: translateY(-2px);
    filter: none !important;
    backdrop-filter: none !important;
}

.contact-form .form-control:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.1);
}

.contact-form .form-floating>label {
    color: var(--text-primary) !important;
    opacity: 0.8;
}

.contact-form .form-control::placeholder {
    color: var(--text-muted);
}

.contact-form label {
    color: var(--text-primary);
    opacity: 0.9;
    font-weight: 500;
}

/* ========== Button Ripple Effect ========== */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.btn-primary-custom,
.btn-outline-custom,
.btn-theme-nav,
.filter-btn {
    position: relative;
    overflow: hidden;
}

/* ========== Loading Button State ========== */
.btn-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-loading span::after {
    content: '...';
    animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {

    0%,
    20% {
        content: '.';
    }

    40% {
        content: '..';
    }

    60%,
    100% {
        content: '...';
    }
}

/* ========== Footer ========== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: 2rem 0;
    margin-top: 100px;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 1.5rem;
    margin: 0 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-link:hover {
    color: var(--accent-primary);
    transform: translateY(-3px);
}

/* ========== Animations ========== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========== Responsive Design ========== */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .metric-number {
        font-size: 2.5rem;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }

    .timeline {
        padding-left: 2rem;
    }

    .timeline-marker {
        left: -2.35rem;
    }

    .filter-btn {
        margin: 0.25rem;
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }

    .contact-card {
        padding: 2rem 1.5rem;
    }

    .profile-picture {
        width: 60px;
        height: 60px;
    }

    .hero-name-container {
        gap: 1rem !important;
    }

    .btn-theme-nav {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        margin-left: 0.5rem;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.9rem;
    }

    .stat-number {
        font-size: 2.2rem;
    }

    .metric-number {
        font-size: 2.2rem;
    }

    .title-underline {
        width: 70px;
        height: 4px;
    }

    .skill-card {
        padding: 1.5rem;
    }

    .profile-picture-container {
        width: 60px;
        height: 60px;
    }

    .profile-picture,
    .profile-picture-placeholder {
        width: 60px;
        height: 60px;
        border-width: 2px;
    }

    .profile-picture-placeholder {
        font-size: 1.8rem;
    }

    .hero-name-container {
        gap: 0.75rem !important;
    }
}

/* ========== Highlight Classes ========== */
.client-highlight {
    color: #10b981;
    font-weight: 700;
    background: rgba(16, 185, 129, 0.2);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    margin: 0 0.15rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
    transition: all 0.3s ease;
}

.client-highlight:hover {
    background: rgba(16, 185, 129, 0.3);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

[data-theme="light"] .client-highlight {
    background: rgba(16, 185, 129, 0.15);
    color: #059669;
}

.metric-highlight {
    color: #f59e0b;
    font-weight: 700;
    background: rgba(245, 158, 11, 0.2);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    border: 1px solid rgba(245, 158, 11, 0.3);
    transition: all 0.3s ease;
}

.metric-highlight:hover {
    background: rgba(245, 158, 11, 0.3);
    transform: scale(1.05);
}

[data-theme="light"] .metric-highlight {
    background: rgba(245, 158, 11, 0.15);
    color: #d97706;
}

.scale-metric {
    color: #3b82f6;
    font-weight: 700;
    background: rgba(59, 130, 246, 0.2);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.scale-metric:hover {
    background: rgba(59, 130, 246, 0.3);
    transform: scale(1.05);
}

[data-theme="light"] .scale-metric {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

.tech-highlight {
    color: #8b5cf6;
    font-weight: 600;
    background: rgba(139, 92, 246, 0.1);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    display: inline-block;
}

[data-theme="light"] .tech-highlight {
    background: rgba(139, 92, 246, 0.15);
    color: #7c3aed;
}

.target-success {
    color: #10b981;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.15);
    padding: 0.3rem 0.6rem;
    border-radius: 6px;
    display: inline-block;
    margin: 0 0.3rem;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

[data-theme="light"] .target-success {
    background: rgba(16, 185, 129, 0.2);
    color: #059669;
    border-color: rgba(16, 185, 129, 0.4);
}

/* ========== Scalability Section Styles ========== */
.scalability-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-primary);
}

.scalability-item {
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-primary);
    line-height: 1.8;
    color: var(--text-primary);
}

.scalability-item p {
    color: var(--text-primary);
    margin: 0;
}

.scalability-label {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 1.05rem;
    display: block;
    margin-bottom: 0.5rem;
}

.scalability-item p {
    margin: 0;
    color: var(--text-secondary);
}

/* ========== Utility Classes ========== */
.text-primary {
    color: var(--text-primary) !important;
}

.text-secondary {
    color: var(--text-secondary) !important;
}

.text-muted {
    color: var(--text-muted) !important;
}

.bg-primary {
    background-color: var(--bg-primary) !important;
}

.bg-secondary {
    background-color: var(--bg-secondary) !important;
}

/* ============================================
   ADDITIONAL STYLES FOR RESEARCH, CERTIFICATIONS, AND ENHANCED SECTIONS
   Append this to styles.css or use as additional stylesheet
   ============================================ */

/* ========== Research Publications Section ========== */
.research-card {
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    height: 100%;
    border: 2px solid var(--glass-border);
}

.research-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow), 0 0 60px rgba(99, 102, 241, 0.3);
}

.research-badge {
    font-size: 0.85rem;
    padding: 0.5rem 1.2rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.research-icon {
    font-size: 2.5rem;
    color: var(--accent-secondary);
    opacity: 0.8;
}

.research-title {
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.research-description {
    color: var(--text-primary);
    opacity: 0.95;
    line-height: 1.8;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.research-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.keyword-tag {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.keyword-tag:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.research-footer {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.research-footer p {
    color: var(--text-primary);
    opacity: 0.9;
    font-size: 0.9rem;
    font-weight: 500;
}

.research-footer strong {
    color: var(--accent-primary);
}

/* Research Impact Section */
.research-impact {
    padding: 2.5rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.research-impact h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.impact-item {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.impact-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.impact-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.impact-item h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.impact-item p {
    color: var(--text-primary);
    opacity: 0.9;
    margin: 0;
    line-height: 1.6;
}

/* ========== Certifications Section ========== */
.certification-card {
    padding: 2rem;
    border: 2px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.6s ease;
}

.certification-card:hover::before {
    left: 100%;
}

.certification-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.3);
}

.cert-header {
    margin-bottom: 1.5rem;
}

.cert-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.cert-icon.research-cert {
    background: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
}

.cert-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-align: center;
    line-height: 1.4;
}

.cert-body {
    text-align: center;
}

.cert-issuer {
    color: var(--text-primary);
    opacity: 0.9;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cert-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Learning Philosophy */
.learning-philosophy {
    padding: 2.5rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.learning-philosophy h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.4rem;
}

.learning-philosophy p {
    color: var(--text-primary);
    opacity: 0.95;
    line-height: 1.8;
}

.philosophy-list {
    list-style: none;
    padding-left: 0;
    margin: 1rem 0;
}

.philosophy-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-primary);
    line-height: 1.7;
}

.philosophy-list li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1.3rem;
}

.philosophy-stat {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 2px solid var(--glass-border);
}

.philosophy-stat .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.philosophy-stat .stat-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ========== Enhanced Project Cards ========== */
.project-content {
    padding: 0;
}

.github-link {
    color: var(--text-secondary);
    font-size: 1.8rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.github-link:hover {
    color: var(--accent-primary);
    transform: scale(1.2) rotate(10deg);
}

.project-stats {
    display: flex;
    gap: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.project-stats span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.project-stats i {
    color: var(--accent-primary);
}

/* GitHub Stats */
.github-stats {
    padding: 3rem;
    text-align: center;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.github-stats h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.github-stat {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 2px solid var(--glass-border);
    transition: all 0.3s ease;
}

.github-stat:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.github-stat .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.github-stat .stat-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ========== Enhanced Contact Section with Profile Image ========== */
.contact-info-section {
    position: relative;
    z-index: 2;
}

.contact-profile-img-container {
    margin-bottom: 2rem;
}

.contact-profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5),
        0 0 0 8px rgba(99, 102, 241, 0.1);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.contact-profile-img:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.7),
        0 0 0 12px rgba(99, 102, 241, 0.15);
    border-color: var(--accent-secondary);
}

.contact-info-section h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
}

/* ========== Responsive Additions ========== */
@media (max-width: 768px) {
    .research-title {
        font-size: 1.2rem;
    }

    .research-card {
        padding: 2rem;
    }

    .certification-card {
        padding: 1.5rem;
    }

    .cert-title {
        font-size: 1.1rem;
    }

    .contact-profile-img {
        width: 120px;
        height: 120px;
    }

    .learning-philosophy {
        padding: 2rem;
    }

    .github-stats {
        padding: 2rem;
    }
}

@media (max-width: 576px) {

    .research-card,
    .certification-card,
    .learning-philosophy {
        padding: 1.5rem;
    }

    .contact-profile-img {
        width: 100px;
        height: 100px;
    }

    .cert-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .impact-icon {
        font-size: 2rem;
    }

    .research-icon {
        font-size: 2rem;
    }
}

/* ========== Research Publications Section ========== */
.research-card {
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    height: 100%;
    border: 2px solid var(--glass-border);
}

.research-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), var(--shadow-glow), 0 0 60px rgba(99, 102, 241, 0.3);
}

.research-badge {
    font-size: 0.85rem;
    padding: 0.5rem 1.2rem;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.research-icon {
    font-size: 2.5rem;
    color: var(--accent-secondary);
    opacity: 0.8;
}

.research-title {
    color: var(--text-primary);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.research-description {
    color: var(--text-primary);
    opacity: 0.95;
    line-height: 1.8;
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

.research-keywords {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
}

.keyword-tag {
    background: var(--bg-tertiary);
    color: var(--accent-primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.keyword-tag:hover {
    background: var(--accent-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

.research-footer {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--glass-border);
}

.research-footer p {
    color: var(--text-primary);
    opacity: 0.9;
    font-size: 0.9rem;
    font-weight: 500;
}

.research-footer strong {
    color: var(--accent-primary);
}

/* Research Impact Section */
.research-impact {
    padding: 2.5rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.research-impact h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.impact-item {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    transition: all 0.3s ease;
}

.impact-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.impact-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.impact-item h6 {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.impact-item p {
    color: var(--text-primary);
    opacity: 0.9;
    margin: 0;
    line-height: 1.6;
}

/* ========== Certifications Section ========== */
.certification-card {
    padding: 2rem;
    border: 2px solid var(--glass-border);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    position: relative;
    overflow: hidden;
}

.certification-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.1), transparent);
    transition: left 0.6s ease;
}

.certification-card:hover::before {
    left: 100%;
}

.certification-card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg), 0 0 40px rgba(99, 102, 241, 0.3);
}

.cert-header {
    margin-bottom: 1.5rem;
}

.cert-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 2rem;
    color: white;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
}

.cert-icon.research-cert {
    background: linear-gradient(135deg, #ec4899 0%, #f59e0b 100%);
}

.cert-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    text-align: center;
    line-height: 1.4;
}

.cert-body {
    text-align: center;
}

.cert-issuer {
    color: var(--text-primary);
    opacity: 0.9;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cert-date {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Learning Philosophy */
.learning-philosophy {
    padding: 2.5rem;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.learning-philosophy h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.4rem;
}

.learning-philosophy p {
    color: var(--text-primary);
    opacity: 0.95;
    line-height: 1.8;
}

.philosophy-list {
    list-style: none;
    padding-left: 0;
    margin: 1rem 0;
}

.philosophy-list li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    color: var(--text-primary);
    line-height: 1.7;
}

.philosophy-list li::before {
    content: '\2713';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: bold;
    font-size: 1.3rem;
}

.philosophy-stat {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 2px solid var(--glass-border);
}

.philosophy-stat .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.philosophy-stat .stat-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ========== Enhanced Project Cards ========== */
.project-content {
    padding: 0;
}

.github-link {
    color: var(--text-secondary);
    font-size: 1.8rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.github-link:hover {
    color: var(--accent-primary);
    transform: scale(1.2) rotate(10deg);
}

.project-stats {
    display: flex;
    gap: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.project-stats span {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.project-stats i {
    color: var(--accent-primary);
}

/* GitHub Stats */
.github-stats {
    padding: 3rem;
    text-align: center;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
}

.github-stats h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.5rem;
}

.github-stat {
    padding: 1.5rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    border: 2px solid var(--glass-border);
    transition: all 0.3s ease;
}

.github-stat:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.2);
}

.github-stat .stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.github-stat .stat-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
    opacity: 0.9;
}

/* ========== Enhanced Contact Section with Profile Image ========== */
.contact-info-section {
    position: relative;
    z-index: 2;
}

.contact-profile-img-container {
    margin-bottom: 2rem;
}

.contact-profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--accent-primary);
    box-shadow: 0 8px 32px rgba(99, 102, 241, 0.5),
        0 0 0 8px rgba(99, 102, 241, 0.1);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.contact-profile-img:hover {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.7),
        0 0 0 12px rgba(99, 102, 241, 0.15);
    border-color: var(--accent-secondary);
}

.contact-info-section h5 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
}

/* ========== Metrics Section ========== */
.metric-card {
    padding: 2rem;
    text-align: center;
    height: 100%;
}

.metric-icon {
    font-size: 2.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

.metric-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
    letter-spacing: -1px;
}

.metric-label {
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-size: 1rem;
    letter-spacing: 0.3px;
}

.metric-detail {
    color: var(--text-primary);
    opacity: 0.75;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 0.5rem;
}

/* ========== Scalability Section Styles ========== */
.scalability-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-primary);
}

.scalability-item {
    margin-bottom: 1.5rem;
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-primary);
    line-height: 1.8;
    color: var(--text-primary);
}

.scalability-item p {
    color: var(--text-primary);
    margin: 0;
}

.scalability-label {
    color: var(--accent-primary);
    font-weight: 600;
    font-size: 1.05rem;
    display: block;
    margin-bottom: 0.5rem;
}

.scalability-item p {
    margin: 0;
    color: var(--text-secondary);
}

/* ========== Responsive Additions ========== */
@media (max-width: 768px) {
    .research-title {
        font-size: 1.2rem;
    }

    .research-card {
        padding: 2rem;
    }

    .certification-card {
        padding: 1.5rem;
    }

    .cert-title {
        font-size: 1.1rem;
    }

    .contact-profile-img {
        width: 120px;
        height: 120px;
    }

    .learning-philosophy {
        padding: 2rem;
    }

    .github-stats {
        padding: 2rem;
    }
}

@media (max-width: 576px) {

    .research-card,
    .certification-card,
    .learning-philosophy {
        padding: 1.5rem;
    }

    .contact-profile-img {
        width: 100px;
        height: 100px;
    }

    .cert-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }

    .impact-icon {
        font-size: 2rem;
    }

    .research-icon {
        font-size: 2rem;
    }
}

/* ========== Print Styles (For Resume Export) ========== */
@media print {

    .navbar,
    .scroll-indicator,
    .footer,
    .contact-form {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .glass-card {
        background: white;
        border: 1px solid #ccc;
        box-shadow: none;
    }

    .section-padding {
        padding: 30px 0;
    }
}

/* Button hover fix - Override Bootstrap */
a.btn.btn-outline-light.btn-outline-custom:hover,
a.btn-outline-custom:hover {
    color: #ffffff !important;
    background: var(--accent-primary) !important;
}

a.btn.btn-outline-light.btn-outline-custom:hover i,
a.btn-outline-custom:hover i {
    color: #ffffff !important;
}

a.btn.btn-outline-light.btn-outline-custom:hover span,
a.btn-outline-custom:hover span {
    color: #ffffff !important;
}

/* Force white text on ALL children */
a.btn-outline-custom:hover * {
    color: #ffffff !important;
}

/* FORCE FIX SYMBOLS */
.experience-list li::before {
    content: '\2022' !important;
}

.philosophy-list li::before {
    content: '\2713' !important;
}