/* ============================================
   ZEN BROWSER STYLE — RESUME
   ============================================ */

:root {
    /* Zen Browser Color Palette */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f0f0f5;
    --text-secondary: #a0a0b0;
    --text-muted: #606070;
    --accent: #7c5ce7;
    --accent-light: #9d7ff0;
    --accent-glow: rgba(124, 92, 231, 0.3);
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-zen: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(124, 92, 231, 0.15);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Light Theme */
[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-card: rgba(0, 0, 0, 0.02);
    --bg-card-hover: rgba(0, 0, 0, 0.05);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --text-primary: #1a1a2e;
    --text-secondary: #505060;
    --text-muted: #909098;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(124, 92, 231, 0.1);
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ============================================
   ZEN BACKGROUND
   ============================================ */
.zen-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: var(--gradient-zen);
    overflow: hidden;
}

.zen-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(124, 92, 231, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(79, 172, 254, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 60% 80%, rgba(240, 147, 251, 0.05) 0%, transparent 50%);
    animation: bgFloat 20s ease-in-out infinite;
}

.zen-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 60px 60px, 80px 80px;
    animation: grainShift 8s linear infinite;
}

@keyframes bgFloat {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(2%, -2%) rotate(1deg); }
    66% { transform: translate(-1%, 1%) rotate(-0.5deg); }
}

@keyframes grainShift {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

/* ============================================
   HEADER
   ============================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 2rem;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

[data-theme="light"] .header {
    background: rgba(245, 245, 247, 0.7);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.logo span {
    color: var(--accent);
    font-weight: 400;
}

.nav {
    display: flex;
    gap: 0.5rem;
}

.nav-link {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

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

.nav-link:hover::after {
    width: 60%;
}

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
    transform: rotate(15deg);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main {
    padding-top: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 2rem;
    padding-right: 2rem;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--gradient-1);
    border-radius: 2px;
    margin: 1rem auto 0;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(100vh - 80px);
    padding: 4rem 0;
}

.hero-content {
    text-align: center;
    max-width: 700px;
}

.avatar-container {
    position: relative;
    width: 140px;
    height: 140px;
    margin: 0 auto 2rem;
}

.avatar-ring {
    position: absolute;
    inset: -4px;
    border-radius: 50%;
    background: var(--gradient-1);
    animation: ringPulse 3s ease-in-out infinite;
}

.avatar-ring::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: var(--gradient-1);
    opacity: 0.3;
    filter: blur(15px);
    animation: ringGlow 3s ease-in-out infinite;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

@keyframes ringGlow {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.15); opacity: 0.5; }
}

.avatar {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent);
    border: 3px solid var(--bg-primary);
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--accent-light);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto 2.5rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
    opacity: 0;
    transition: var(--transition-fast);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(124, 92, 231, 0.3);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

/* ============================================
   CARDS GRID
   ============================================ */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

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

/* ============================================
   CARD BASE
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: var(--transition-smooth);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

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

/* ============================================
   SKILL CARDS
   ============================================ */
.skill-card {
    text-align: center;
}

.card-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    transition: var(--transition-bounce);
}

.skill-card:hover .card-icon {
    transform: scale(1.2) rotate(5deg);
}

.skill-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.skill-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.skill-bar {
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
    position: relative;
}

.skill-fill {
    height: 100%;
    width: 0;
    background: var(--gradient-1);
    border-radius: 3px;
    transition: width 1.5s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.skill-fill::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 10px;
    height: 10px;
    background: var(--accent-light);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-glow);
    opacity: 0;
    transition: var(--transition-fast);
}

.skill-card:hover .skill-fill::after {
    opacity: 1;
}

/* ============================================
   TIMELINE / EXPERIENCE
   ============================================ */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent), var(--border-color));
    border-radius: 1px;
}

.timeline-item {
    position: relative;
    padding-left: 60px;
    margin-bottom: 2rem;
}

.timeline-marker {
    position: absolute;
    left: 12px;
    top: 2rem;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--bg-primary);
    border: 3px solid var(--accent);
    z-index: 1;
    transition: var(--transition-smooth);
}

.timeline-item:hover .timeline-marker {
    background: var(--accent);
    box-shadow: 0 0 20px var(--accent-glow);
    transform: scale(1.2);
}

.experience-card {
    width: 100%;
}

.experience-header {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.experience-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.experience-company {
    color: var(--accent-light);
    font-weight: 500;
    font-size: 0.95rem;
}

.experience-date {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-left: auto;
}

.experience-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1rem;
}

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

.tag {
    padding: 0.35rem 0.85rem;
    background: var(--bg-card-hover);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.tag:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* ============================================
   PROJECT CARDS
   ============================================ */
.project-card {
    padding: 0;
    display: flex;
    flex-direction: column;
}

.project-image {
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: rgba(255, 255, 255, 0.9);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.project-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.3) 100%);
}

.project-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.1);
    opacity: 0;
    transition: var(--transition-smooth);
}

.project-card:hover .project-image::after {
    opacity: 1;
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.project-content p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 1rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--accent-light);
    transition: var(--transition-fast);
    position: relative;
}

.link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: var(--transition-smooth);
}

.link:hover {
    color: var(--accent);
}

.link:hover::after {
    width: 100%;
}

/* ============================================
   CONTACT CARDS
   ============================================ */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
}

.contact-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
    transition: var(--transition-bounce);
}

.contact-card:hover .contact-icon {
    transform: scale(1.15) translateY(-4px);
}

.contact-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.contact-link {
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: var(--transition-fast);
    display: inline-block;
}

.contact-link:hover {
    color: var(--accent-light);
    transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    text-align: center;
    padding: 3rem 2rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

/* ============================================
   ANIMATIONS
   ============================================ */
.card, .timeline-item, .hero-content > * {
    opacity: 0;
    transform: translateY(30px);
}

.card.visible, .timeline-item.visible, .hero-content > *.visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Stagger delays */
[data-delay="0"] { transition-delay: 0s !important; }
[data-delay="100"] { transition-delay: 0.1s !important; }
[data-delay="150"] { transition-delay: 0.15s !important; }
[data-delay="200"] { transition-delay: 0.2s !important; }
[data-delay="250"] { transition-delay: 0.25s !important; }
[data-delay="300"] { transition-delay: 0.3s !important; }
[data-delay="350"] { transition-delay: 0.35s !important; }
[data-delay="400"] { transition-delay: 0.4s !important; }

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .header {
        padding: 1rem;
    }

    .nav {
        display: none;
    }

    .main {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cards-grid, .projects-grid {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 12px;
    }

    .timeline-item {
        padding-left: 40px;
    }

    .timeline-marker {
        left: 4px;
        width: 16px;
        height: 16px;
    }

    .experience-header {
        flex-direction: column;
        gap: 0.25rem;
    }

    .experience-date {
        margin-left: 0;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .avatar-container {
        width: 110px;
        height: 110px;
    }

    .avatar {
        font-size: 2rem;
    }

    .btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.9rem;
    }

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

    .card {
        padding: 1.5rem;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* ============================================
   SELECTION
   ============================================ */
::selection {
    background: var(--accent);
    color: white;
}