/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Colors */
    --color-primary: #022643;
    --color-primary-light: #0a3d6b;
    --color-accent: #f7ab1c;
    --color-accent-hover: #ffba00;
    --color-bg: #ffffff;
    --color-bg-alt: #f4f7fa;
    --color-surface: #ffffff;
    --color-text: #1a2332; /* Darker text for contrast */
    --color-text-secondary: #5a6a7a; /* Slightly darker secondary text */
    --color-text-muted: #8a95a3;
    --color-border: #e2e8f0;
    --color-shadow: rgba(0, 0, 0, 0.12); /* More pronounced shadow */
    --color-shadow-hover: rgba(0, 0, 0, 0.25); /* More pronounced hover shadow */

    /* Typography */
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50%;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Layout */
    --container-max: 1100px;
    --navbar-height: 70px;
}

/* Dark Mode */
body.dark-mode {
    --color-primary: #4da3ff;
    --color-primary-light: #6bb5ff;
    --color-bg: #0f1724;
    --color-bg-alt: #162033;
    --color-surface: #1a2740;
    --color-text: #e8edf4;
    --color-text-secondary: #9aacbf;
    --color-text-muted: #6b7d90;
    --color-border: #2a3a50; /* Slightly darker border */
    --color-shadow: rgba(0, 0, 0, 0.4); /* More pronounced shadow for dark mode */
    --color-shadow-hover: rgba(0, 0, 0, 0.6); /* More pronounced hover shadow for dark mode */
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--navbar-height);
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-base), color var(--transition-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   Utility Classes
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-4xl) 0;
}

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

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    font-weight: 700;
    color: var(--color-primary);
    text-align: center;
    margin-bottom: var(--space-3xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: var(--color-accent);
    margin: var(--space-md) auto 0;
    border-radius: 2px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover)); /* Keep gradient */
    color: #022643;
    border-color: var(--color-accent);
}

.btn-primary:hover {
    transform: translateY(-3px); /* Slightly more lift */
    /* More pronounced shadow with a subtle glow */
    box-shadow: 0 8px 25px rgba(247, 171, 28, 0.6), 0 0 15px var(--color-accent);
}

.btn-outline {
    background: transparent;
    color: #fff;
    /* Slightly more opaque border for better visibility */
    border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #fff;
    transform: translateY(-3px); /* More lift */
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2); /* Add a subtle shadow */
    transform: translateY(-2px);
}

.btn-small {
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
    background: var(--color-accent);
    color: #022643;
    font-weight: 600;
    border-radius: var(--radius-sm);
}

.btn-small:hover {
    background: var(--color-accent-hover);
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--navbar-height);
    z-index: 1000;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--color-bg);
    box-shadow: 0 2px 20px var(--color-shadow);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -1px;
    transition: color var(--transition-base), transform var(--transition-fast); /* Add transform to transition */
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    letter-spacing: -1px;
    transition: color var(--transition-base);
}

.nav-logo:hover {
    transform: scale(1.05); /* Subtle scale on hover */
    color: var(--color-accent); /* Change color on hover */
}

.navbar.scrolled .nav-logo {
    color: var(--color-primary);
}

.navbar.scrolled .nav-logo:hover {
    color: var(--color-accent); /* Keep accent color on hover when scrolled */
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.85);
    padding: var(--space-xs) var(--space-sm);
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-base);
    border-radius: 1px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: #fff;
}

.navbar.scrolled .nav-link {
    color: var(--color-text-secondary);
}

.navbar.scrolled .nav-link:hover,
.navbar.scrolled .nav-link.active {
    color: var(--color-primary);
}

/* Theme Toggle */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.85);
    padding: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.1);
}

.navbar.scrolled .theme-toggle {
    color: var(--color-text-secondary);
}

.navbar.scrolled .theme-toggle:hover {
    background: var(--color-bg-alt);
}

.moon-icon { display: none; }
body.dark-mode .sun-icon { display: none; }
body.dark-mode .moon-icon { display: block; }

/* Mobile Nav Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    z-index: 1001;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    transition: all var(--transition-base);
    border-radius: 1px;
}

.navbar.scrolled .nav-toggle span {
    background: var(--color-text);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-merged {
    min-height: auto;
    padding: calc(var(--navbar-height) + var(--space-3xl)) 0 var(--space-3xl);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(2, 38, 67, 0.85) 0%,
        rgba(10, 61, 107, 0.75) 50%,
        rgba(2, 38, 67, 0.9) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
    padding: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
}

.hero-intro {
    margin-bottom: var(--space-2xl);
}

.hero-avatar {
    width: 130px;
    height: 130px;
    margin: 0 auto var(--space-xl);
    border-radius: var(--radius-full);
    overflow: hidden;
    border: 4px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.hero-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-name {
    font-size: clamp(2rem, 6vw, 3.5rem);
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: var(--space-sm);
}

.hero-title {
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    font-weight: 400;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

/* Hero About (merged section) */
.hero-about {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-2xl);
    text-align: left;
    margin-bottom: var(--space-2xl);
    padding: var(--space-2xl);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
}

.hero-about-text p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.hero-about-text p:last-child {
    margin-bottom: 0;
}

.hero-about-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.hero-detail-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1); /* Subtle initial shadow */
}

.hero-detail-card:hover {
    background: rgba(255, 255, 255, 0.18); /* Slightly more opaque background */
    transform: translateY(-4px); /* Lift instead of slide */
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2); /* Add a subtle shadow */
}

.hero-detail-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.hero-detail-logo {
    width: 24px;
    height: 24px;
    object-fit: contain;
    flex-shrink: 0;
    filter: brightness(0) invert(1);
}

.hero-detail-text {
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
}

/* Hero Education Column (right side) */
.hero-edu-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.hero-edu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.hero-edu-item:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}

.hero-edu-item img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
}

.hero-edu-text {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.hero-edu-text strong {
    font-size: 0.85rem;
    font-weight: 600;
    color: #fff;
    line-height: 1.3;
}

.hero-edu-text span {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.3;
    margin-top: 2px;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero Subtitle (Typing Animation) */
.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    color: var(--color-accent);
    text-align: center;
    min-height: 1.5em;
    margin-bottom: var(--space-lg);
}

.typing-cursor {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    background: var(--color-accent);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 1s step-end infinite;
}

.typing-cursor.typing {
    animation: none;
    opacity: 1;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Hero Entrance Animations */
.hero-animate-target {
    opacity: 0;
    transform: translateY(30px);
}

.hero-animate-target.hero-animate-in {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.hero-name.hero-animate-target {
    transition-delay: 0ms;
}

#typing-subtitle.hero-animate-target {
    transition-delay: 300ms;
}

.hero-about.hero-animate-target {
    transition-delay: 600ms;
}

.hero-cta.hero-animate-target {
    transition-delay: 900ms;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .hero-animate-target {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .typing-cursor {
        animation: none;
    }
}

/* Hero Tags */
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
    margin-bottom: var(--space-sm);
}

.hero-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    font-size: 0.8rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.9);
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: var(--radius-sm);
    backdrop-filter: blur(4px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255, 255, 255, 0.5);
    animation: bounce 2s infinite;
    z-index: 1;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* ============================================
   About Section
   ============================================ */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: start;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    font-size: 1.05rem;
}

.about-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-plus {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.about-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.detail-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
}

.detail-card:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.detail-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.detail-value {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

/* ============================================
   Education Inline (within About)
   ============================================ */
.education-inline {
    grid-column: 1 / -1;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.education-inline-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.education-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.education-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: 0.95rem;
    color: var(--color-text);
}

.education-item-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.education-item strong {
    display: block;
    font-weight: 600;
}

.education-item-meta {
    display: block;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    margin-top: 2px;
}

@media (max-width: 768px) {
    .education-list {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
}

/* ============================================
   Skills Section
   ============================================ */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.skill-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center; /* Center content */
    transition: all var(--transition-base); /* Smooth transitions for all properties */
    box-shadow: 0 5px 15px var(--color-shadow); /* Initial subtle shadow */
}

.skill-card:hover {
    transform: translateY(-8px); /* More lift */
    box-shadow: 0 15px 40px var(--color-shadow-hover); /* Larger shadow */
}

.skill-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
}

.skill-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
}

.skill-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.skill-bar {
    width: 100%;
    height: 6px;
    background: var(--color-bg-alt);
    border-radius: 3px;
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    width: 0;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
    border-radius: 3px;
    transition: width 1.2s ease-out;
}

/* ============================================
   Projects Section
   ============================================ */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

.project-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base); /* Smooth transitions */
    box-shadow: 0 8px 20px var(--color-shadow); /* Initial subtle shadow */
}

.project-card:hover {
    transform: translateY(-10px) rotateX(2deg) rotateY(2deg); /* More lift, subtle 3D */
    box-shadow: 0 25px 50px var(--color-shadow-hover); /* Larger, more diffused shadow */
    perspective: 1000px; /* Enable 3D transforms */
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    inset: 0;
    background: rgba(2, 38, 67, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.project-info {
    padding: var(--space-xl);
}

.project-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-sm);
}

.project-desc {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tag {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
}

/* ============================================
   Skills Banner
   ============================================ */
.skills-banner {
    text-align: center;
}

.skills-banner-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.skills-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: center;
}

.skill-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-primary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.skill-tag:hover {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* ============================================
   Education Section (Stylish Cards)
   ============================================ */
.edu-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.edu-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center; /* Center content */
    transition: all var(--transition-base); /* Smooth transitions */
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 20px var(--color-shadow); /* Initial subtle shadow */
}

/* Accent border on top */
.edu-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.edu-card:hover {
    transform: translateY(-10px) rotateX(2deg) rotateY(2deg); /* More lift, subtle 3D */
    box-shadow: 0 25px 50px var(--color-shadow-hover); /* Larger, more diffused shadow */
    perspective: 1000px; /* Enable 3D transforms */
}

.edu-logo {
    width: 90px;
    height: 90px;
    margin: 0 auto var(--space-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
    transition: transform var(--transition-base);
}

.edu-card:hover .edu-logo {
    transform: scale(1.08);
}

.edu-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.edu-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.edu-school {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.3;
}

.edu-degree {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    line-height: 1.5;
}

.edu-meta {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-top: var(--space-sm);
    flex-wrap: wrap;
}

.edu-date {
    display: inline-block;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 0.2rem 0.7rem;
    border-radius: var(--radius-sm);
}

.edu-location {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.edu-location::before {
    content: '📍';
    font-size: 0.75rem;
}

@media (max-width: 968px) {
    .edu-grid {
        grid-template-columns: 1fr;
        max-width: 450px;
        margin: 0 auto;
    }
}

/* ============================================
   Experience / Timeline
   ============================================ */
.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
    padding-left: var(--space-2xl);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--color-border);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--space-2xl);
}

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

.timeline-marker {
    position: absolute;
    left: calc(-1 * var(--space-2xl) + 2px);
    top: 6px;
    width: 14px;
    height: 14px;
    border-radius: var(--radius-full);
    background: var(--color-accent);
    border: 3px solid var(--color-bg-alt);
    z-index: 1;
}

.timeline-content {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    transition: all var(--transition-base); /* Smooth transitions */
    box-shadow: 0 5px 15px var(--color-shadow); /* Initial subtle shadow */
}

.timeline-content:hover {
    transform: translateY(-3px); /* Add a slight lift */
    box-shadow: 0 10px 30px var(--color-shadow-hover); /* More pronounced shadow */
}

.timeline-header {
    margin-bottom: var(--space-sm);
}

.timeline-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-text);
}

.timeline-company {
    font-size: 0.9rem;
    color: var(--color-accent);
    font-weight: 500;
}

.timeline-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    align-items: center;
    margin-bottom: var(--space-md);
}

.timeline-date {
    display: inline-block;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 0.15rem 0.6rem;
    border-radius: var(--radius-sm);
}

.timeline-location {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

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

.timeline-content li {
    position: relative;
    padding-left: var(--space-lg);
    margin-bottom: var(--space-sm);
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

.timeline-content li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

/* ============================================
   Education Section
   ============================================ */
.education-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.education-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.education-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--color-shadow-hover);
}

.education-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.education-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-xs);
}

.education-degree {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.education-date {
    display: inline-block;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    background: var(--color-bg-alt);
    padding: 0.15rem 0.6rem;
    border-radius: var(--radius-sm);
    margin-right: var(--space-sm);
}

.education-location {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* ============================================
   Contact Section
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.8;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    color: var(--color-text); /* Text color */
    transition: all var(--transition-base); /* Smooth transitions */
    box-shadow: 0 4px 10px var(--color-shadow); /* Initial subtle shadow */
}

.contact-method:hover {
    transform: translateY(-3px); /* Lift instead of slide */
    border-color: var(--color-accent);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.contact-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.contact-social h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.social-links {
    display: flex;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: var(--color-surface);
    border: 1px solid var(--color-border); /* Border color */
    border-radius: var(--radius-md);
    transition: all var(--transition-base); /* Smooth transitions */
    box-shadow: 0 5px 15px var(--color-shadow); /* Initial subtle shadow */
}

.social-link:hover {
    transform: translateY(-5px) scale(1.05); /* More lift and subtle scale */
    box-shadow: 0 10px 25px var(--color-shadow-hover); /* More pronounced shadow */
    border-color: var(--color-accent);
}

.social-link img {
    width: 28px;
    height: 28px;
    object-fit: contain;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    text-align: center;
    padding: var(--space-2xl) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg);
}

.footer-text {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.footer-sub {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* ============================================
   Back to Top Button
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px var(--color-shadow);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-accent);
    color: #022643;
    transform: translateY(-3px);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 968px) {
    .hero-about {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .education-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --navbar-height: 60px;
    }

    .container {
        padding: 0 var(--space-lg);
    }

    .section {
        padding: var(--space-3xl) 0;
    }

    /* Mobile Navigation */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg);
        flex-direction: column;
        padding: calc(var(--navbar-height) + var(--space-xl)) var(--space-xl) var(--space-xl);
        box-shadow: -5px 0 30px var(--color-shadow);
        transition: right var(--transition-base);
        gap: var(--space-sm);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        color: var(--color-text);
        font-size: 1rem;
        padding: var(--space-sm) 0;
    }

    .nav-link:hover,
    .nav-link.active {
        color: var(--color-primary);
    }

    /* Hero */
    .hero-merged {
        padding-top: calc(var(--navbar-height) + var(--space-2xl));
    }

    .hero-about {
        padding: var(--space-lg);
    }

    .hero-edu-row {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

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

    .hero-cta .btn {
        width: 100%;
        max-width: 250px;
    }

    /* About */
    .about-stats {
        gap: var(--space-lg);
    }

    .stat-number {
        font-size: 1.75rem;
    }

    /* Skills */
    .skills-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-md);
    }

    .skill-card {
        padding: var(--space-lg);
    }

    /* Projects */
    .projects-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto;
    }

    /* Education */
    .education-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }

    /* Timeline */
    .timeline {
        padding-left: var(--space-xl);
    }

    .timeline-marker {
        left: calc(-1 * var(--space-xl) + 2px);
    }

    .timeline-content {
        padding: var(--space-lg);
    }

    /* Back to top */
    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 40px;
        height: 40px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .skills-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }

    .skill-card {
        padding: var(--space-md);
    }

    .skill-icon {
        width: 48px;
        height: 48px;
    }

    .about-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .hero-name {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        min-height: 2.5em;
        overflow-wrap: break-word;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .timeline-content {
        padding: var(--space-md);
    }

    .contact-method {
        padding: var(--space-md);
    }
}