/* ===== Design System & Variables ===== */
:root {
    /* Color Palette - Clean White Professional Theme */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f8fafc;
    --color-bg-tertiary: #f1f5f9;
    --color-bg-card: #ffffff;
    --color-bg-glass: rgba(255, 255, 255, 0.9);

    /* Professional Accent Colors */
    --color-primary: #2563eb;
    --color-secondary: #7c3aed;
    --color-accent-1: #0891b2;
    --color-accent-2: #059669;
    --color-accent-3: #d97706;
    --color-accent-4: #dc2626;

    /* Gradient Definitions */
    --gradient-primary: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
    --gradient-text: linear-gradient(135deg, #1e293b 0%, #475569 100%);
    --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-card-1: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    --gradient-card-2: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
    --gradient-card-3: linear-gradient(135deg, #0891b2 0%, #06b6d4 100%);
    --gradient-card-4: linear-gradient(135deg, #059669 0%, #10b981 100%);

    /* Text Colors */
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;

    /* Border & Shadow */
    --color-border: #e2e8f0;
    --color-border-hover: #cbd5e1;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.12);
    --shadow-color: 0 10px 40px rgba(37, 99, 235, 0.15);

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 5rem;

    /* Typography */
    --font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-spring: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    min-height: 100vh;
}

::selection {
    background: var(--color-primary);
    color: white;
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
}

/* ===== Subtle Background Pattern ===== */
.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: linear-gradient(180deg, #f8fafc 0%, #ffffff 50%, #f8fafc 100%);
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
    animation: floatSoft 25s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: linear-gradient(135deg, #bfdbfe, #c4b5fd);
    top: -150px;
    right: -100px;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #a5f3fc, #c7d2fe);
    bottom: -100px;
    left: -100px;
    animation-delay: -8s;
}

.orb-3 {
    width: 300px;
    height: 300px;
    background: linear-gradient(135deg, #d9f99d, #a5f3fc);
    top: 40%;
    left: 30%;
    animation-delay: -16s;
}

@keyframes floatSoft {

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

    33% {
        transform: translate(30px, -20px) scale(1.02);
    }

    66% {
        transform: translate(-20px, 30px) scale(0.98);
    }
}

/* ===== Container ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* ===== Navigation ===== */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-sm) 0;
    transition: all var(--transition-base);
    background: transparent;
}

#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 4px;
    text-decoration: none;
    font-weight: 700;
    font-size: var(--font-size-xl);
}

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

.logo-dot {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {

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

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    list-style: none;
}

.nav-links a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.nav-links a:hover {
    color: var(--color-text-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.btn-resume {
    display: flex !important;
    align-items: center;
    gap: 8px;
    background: var(--gradient-primary);
    color: white !important;
    padding: 10px 20px !important;
    border-radius: var(--radius-full) !important;
    font-weight: 600 !important;
    transition: all var(--transition-spring) !important;
    box-shadow: var(--shadow-color);
}

.btn-resume::after {
    display: none !important;
}

.btn-resume:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(37, 99, 235, 0.3);
}

.btn-resume svg {
    transition: transform var(--transition-base);
}

.btn-resume:hover svg {
    transform: translateY(2px);
}

/* Hamburger Menu */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--color-text-primary);
    transition: all var(--transition-base);
    border-radius: 2px;
}

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

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

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

/* ===== Hero Section ===== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px var(--space-lg) var(--space-2xl);
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
}

.hero-content {
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    border: 1px solid var(--color-border);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(34, 197, 94, 0.5);
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, var(--font-size-5xl));
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    animation: fadeInUp 1s ease-out 0.3s both;
}

.title-line {
    display: block;
    font-size: 0.5em;
    font-weight: 400;
    color: var(--color-text-secondary);
    margin-bottom: 8px;
}

.title-name {
    display: block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.separator {
    color: var(--color-primary);
    margin: 0 8px;
}

.hero-description {
    font-size: var(--font-size-base);
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    animation: fadeInUp 1s ease-out 0.5s both;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 1s ease-out 0.6s both;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    padding: 16px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-color);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(37, 99, 235, 0.35);
}

.btn-primary svg {
    transition: transform var(--transition-base);
}

.btn-primary:hover svg {
    transform: translateX(5px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: white;
    color: var(--color-text-primary);
    text-decoration: none;
    padding: 16px 32px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: var(--font-size-base);
    border: 1px solid var(--color-border);
    transition: all var(--transition-spring);
    box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
    background: var(--color-bg-secondary);
    border-color: var(--color-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.7s both;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-plus {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: var(--color-border);
}

.scroll-indicator {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: none;
    /* Hidden by default to prevent overlap */
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
    animation: fadeInUp 1s ease-out 0.8s both;
    z-index: 1;
}

/* Only show scroll indicator on very tall screens */
@media (min-height: 900px) and (min-width: 1200px) {
    .scroll-indicator {
        display: flex;
    }
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {

    0%,
    100% {
        height: 40px;
        opacity: 1;
    }

    50% {
        height: 60px;
        opacity: 0.5;
    }
}

/* ===== Section Styles ===== */
section {
    padding: var(--space-2xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-tag {
    display: inline-block;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 8px 20px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

.section-title {
    font-size: clamp(2rem, 5vw, var(--font-size-4xl));
    font-weight: 800;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.section-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ===== About Section ===== */
#about {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.about-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    font-size: var(--font-size-base);
}

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

.about-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
}

.about-stat-item {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.about-stat-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-color);
}

.about-stat-number {
    display: block;
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    margin-top: 4px;
}

/* ===== Skills Section - 2 PER ROW ===== */
#skills {
    background: white;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.skill-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.skill-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.skill-card:nth-child(1)::before {
    background: var(--gradient-card-1);
}

.skill-card:nth-child(2)::before {
    background: var(--gradient-card-2);
}

.skill-card:nth-child(3)::before {
    background: var(--gradient-card-3);
}

.skill-card:nth-child(4)::before {
    background: var(--gradient-card-4);
}

.skill-card:hover {
    border-color: transparent;
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.skill-card:hover::before {
    opacity: 1;
}

.skill-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    transition: all var(--transition-base);
}

.skill-card:nth-child(1) .skill-icon {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(59, 130, 246, 0.1));
    color: #2563eb;
}

.skill-card:nth-child(2) .skill-icon {
    background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(168, 85, 247, 0.1));
    color: #7c3aed;
}

.skill-card:nth-child(3) .skill-icon {
    background: linear-gradient(135deg, rgba(8, 145, 178, 0.1), rgba(6, 182, 212, 0.1));
    color: #0891b2;
}

.skill-card:nth-child(4) .skill-icon {
    background: linear-gradient(135deg, rgba(5, 150, 105, 0.1), rgba(16, 185, 129, 0.1));
    color: #059669;
}

.skill-card:nth-child(1):hover .skill-icon {
    background: var(--gradient-card-1);
    color: white;
}

.skill-card:nth-child(2):hover .skill-icon {
    background: var(--gradient-card-2);
    color: white;
}

.skill-card:nth-child(3):hover .skill-icon {
    background: var(--gradient-card-3);
    color: white;
}

.skill-card:nth-child(4):hover .skill-icon {
    background: var(--gradient-card-4);
    color: white;
}

.skill-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.skill-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.6;
}

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

.skill-tags span {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.skill-card:nth-child(1):hover .skill-tags span {
    background: rgba(37, 99, 235, 0.1);
    border-color: #2563eb;
    color: #2563eb;
}

.skill-card:nth-child(2):hover .skill-tags span {
    background: rgba(124, 58, 237, 0.1);
    border-color: #7c3aed;
    color: #7c3aed;
}

.skill-card:nth-child(3):hover .skill-tags span {
    background: rgba(8, 145, 178, 0.1);
    border-color: #0891b2;
    color: #0891b2;
}

.skill-card:nth-child(4):hover .skill-tags span {
    background: rgba(5, 150, 105, 0.1);
    border-color: #059669;
    color: #059669;
}

/* ===== Experience Section ===== */
#experience {
    background: var(--color-bg-secondary);
}

.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: flex;
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

.marker-dot {
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
    position: relative;
}

.marker-dot::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: white;
    border-radius: 50%;
}

.marker-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-border));
    margin-top: 8px;
}

.experience-card {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    flex: 1;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.experience-card:hover {
    border-color: var(--color-primary);
    transform: translateX(10px);
    box-shadow: var(--shadow-color);
}

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.experience-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 4px;
}

.experience-company {
    font-size: var(--font-size-base);
    color: var(--color-primary);
}

.location {
    color: var(--color-text-muted);
    font-weight: 400;
}

.experience-date {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border: 1px solid rgba(37, 99, 235, 0.2);
    padding: 6px 14px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    color: var(--color-primary);
    white-space: nowrap;
    font-weight: 600;
}

.experience-card ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.experience-card li {
    position: relative;
    padding-left: 24px;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.experience-card li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--gradient-primary);
    border-radius: 50%;
}

/* ===== Education Section ===== */
#education {
    background: white;
}

.education-grid {
    display: grid;
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.education-card {
    display: flex;
    gap: var(--space-lg);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.education-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-color);
}

.education-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: var(--radius-md);
    color: var(--color-primary);
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.education-card:hover .education-icon {
    background: var(--gradient-primary);
    color: white;
}

.education-content {
    flex: 1;
}

.education-status {
    display: inline-block;
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid rgba(217, 119, 6, 0.3);
    color: #d97706;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.education-status.completed {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.3);
    color: #16a34a;
}

.education-degree {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 8px;
}

.education-institution {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    margin-bottom: 4px;
}

.education-date {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ===== Publications Section ===== */
#publications {
    background: var(--color-bg-secondary);
}

.publication-card {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.publication-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
}

.publication-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-5px);
    box-shadow: var(--shadow-color);
}

.publication-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.publication-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.publication-details {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
}

.publication-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
}

.publication-link:hover {
    gap: 12px;
    color: var(--color-secondary);
}

/* ===== Contact Section ===== */
#contact {
    background: white;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-decoration: none;
    text-align: center;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-8px);
    box-shadow: var(--shadow-color);
}

.contact-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(124, 58, 237, 0.1));
    border-radius: var(--radius-md);
    color: var(--color-primary);
    transition: all var(--transition-base);
}

.contact-card:hover .contact-icon {
    background: var(--gradient-primary);
    color: white;
}

.contact-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-value {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    font-weight: 600;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.footer-logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-brand p {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

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

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

.social-links a {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    transform: translateY(-3px);
}

/* ===== Bottom Navigation (Mobile) ===== */
.bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--color-border);
    padding: 8px var(--space-sm);
    z-index: 1000;
}

.bottom-nav button {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.bottom-nav button.active svg {
    stroke: var(--color-primary);
}

/* ===== Animations for Scroll ===== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

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

/* ===== Responsive Design ===== */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .about-stats {
        max-width: 400px;
        margin: 0 auto;
    }

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 260px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: flex-start;
        padding: 80px var(--space-lg) var(--space-lg);
        transition: right var(--transition-base);
        border-left: 1px solid var(--color-border);
        gap: 4px;
    }

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

    .nav-links li {
        width: 100%;
    }

    .nav-links a {
        font-size: var(--font-size-base);
        padding: 12px var(--space-md);
        color: var(--color-text-primary);
        display: block;
        width: 100%;
        border-radius: var(--radius-sm);
        transition: all var(--transition-fast);
    }

    .nav-links a:hover {
        background: var(--color-bg-secondary);
    }

    .nav-links a::after {
        display: none;
    }

    .nav-links .btn-resume {
        margin-top: var(--space-sm);
        padding: 12px 24px !important;
        justify-content: center;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding-top: 100px;
    }

    .hero-stats {
        gap: var(--space-lg);
    }

    .stat-divider {
        display: none;
    }

    .skills-grid {
        grid-template-columns: 1fr;
    }

    .timeline-item {
        flex-direction: column;
    }

    .timeline-marker {
        flex-direction: row;
    }

    .marker-line {
        width: 0;
        height: 0;
    }

    .experience-card:hover {
        transform: translateY(-5px);
    }

    .education-card {
        flex-direction: column;
        text-align: center;
    }

    .education-icon {
        margin: 0 auto;
    }

    .contact-methods {
        grid-template-columns: 1fr;
    }

    .bottom-nav {
        display: flex;
    }

    footer {
        padding-bottom: 80px;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }

    .about-stats {
        grid-template-columns: 1fr;
    }
}

/* ===== Print Styles ===== */
@media print {

    .bg-animation,
    .scroll-indicator,
    .bottom-nav,
    #navbar {
        display: none !important;
    }

    body {
        background: white;
        color: black;
    }

    section {
        page-break-inside: avoid;
    }
}