/* ============================================
   Çağrı Topuz – Kişisel Web Sitesi
   Premium Dark Theme + Glassmorphism
   ============================================ */

/* === CSS Variables === */
:root {
    --bg-primary: #06060f;
    --bg-secondary: #0c0c1d;
    --bg-tertiary: #12122a;
    --bg-card: rgba(18, 18, 42, 0.6);
    --bg-glass: rgba(18, 18, 42, 0.45);
    --border-glass: rgba(99, 102, 241, 0.15);
    --text-primary: #e8e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #a78bfa;
    --accent-glow: rgba(99, 102, 241, 0.3);
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #a78bfa);
    --accent-gradient-2: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --success: #22c55e;
    --warning: #f59e0b;
    --danger: #ef4444;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.5);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.15);
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

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

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--accent-tertiary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover { color: var(--accent-primary); }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Glass Card === */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    transition: var(--transition);
}
.glass-card:hover {
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-xl);
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    text-decoration: none;
    position: relative;
    overflow: hidden;
}
.btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
    opacity: 0;
    transition: var(--transition);
}
.btn:hover::before { opacity: 1; }

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--accent-tertiary);
    border: 2px solid var(--accent-primary);
}
.btn-outline:hover {
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
    color: #fff;
}

.btn-block { width: 100%; justify-content: center; }

/* === Navbar === */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
}
.navbar.scrolled {
    background: rgba(6, 6, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-glass);
    padding: 10px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 2px;
}
.logo-bracket { color: var(--accent-primary); }
.logo-text { color: var(--text-primary); }

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
}

.nav-link {
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-gradient);
    border-radius: 1px;
    transition: var(--transition);
    transform: translateX(-50%);
}
.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}
.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
}
.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* === Hero Section === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 120px 24px 80px;
}

.particle-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(99,102,241,0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(139,92,246,0.06) 0%, transparent 50%);
    animation: heroGradient 15s ease-in-out infinite alternate;
    z-index: 0;
}

@keyframes heroGradient {
    0%   { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(-5%, 5%) rotate(3deg); }
}

.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: var(--accent-tertiary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
    font-family: var(--font-mono);
}

.hero-name {
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, #e8e8f0 40%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-title-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
    font-size: clamp(1rem, 2.5vw, 1.4rem);
}
.hero-title-label {
    color: var(--text-muted);
    font-family: var(--font-mono);
}
.hero-title {
    color: var(--accent-tertiary);
    font-weight: 600;
}
.typing-cursor {
    color: var(--accent-primary);
    animation: blink 1s step-end infinite;
    font-weight: 300;
}
@keyframes blink {
    50% { opacity: 0; }
}

.hero-location {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
.hero-location i { color: var(--accent-primary); }

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.hero-social {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.social-icon {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: var(--text-secondary);
    font-size: 1.1rem;
    transition: var(--transition);
}
.social-icon:hover {
    background: var(--accent-primary);
    color: #fff;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(99,102,241,0.4);
}

.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1;
}
.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    animation: scrollBounce 2s ease-in-out infinite;
}
@keyframes scrollBounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(8px); }
}

/* === Sections === */
.section {
    padding: 100px 0;
    position: relative;
}
.section-alt {
    background: var(--bg-secondary);
}
.section-alt::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-glass), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 18px;
    border-radius: var(--radius-xl);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: var(--accent-tertiary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 16px;
    font-family: var(--font-mono);
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* === About === */
.about-card {
    padding: 40px;
}
.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 40px;
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    text-align: center;
}
.stat-item {
    padding: 20px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.1);
}
.stat-number {
    font-size: 2.4rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* === Timeline === */
.timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, transparent, var(--accent-primary), var(--accent-secondary), transparent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    width: 50%;
    padding: 0 40px 60px;
}
.timeline-item.left { left: 0; padding-right: 60px; }
.timeline-item.right { left: 50%; padding-left: 60px; }

.timeline-dot {
    position: absolute;
    top: 0;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent-primary);
    border: 3px solid var(--bg-primary);
    z-index: 2;
}
.timeline-item.left .timeline-dot { right: -8px; }
.timeline-item.right .timeline-dot { left: -8px; }

.pulse-ring {
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid var(--accent-primary);
    animation: pulse 2s ease-in-out infinite;
}
@keyframes pulse {
    0%   { transform: scale(1); opacity: 1; }
    100% { transform: scale(2.5); opacity: 0; }
}

.timeline-card {
    padding: 28px;
}
.timeline-date {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    color: var(--accent-tertiary);
    font-weight: 500;
    margin-bottom: 8px;
    font-family: var(--font-mono);
}
.badge-current {
    background: rgba(34, 197, 94, 0.15);
    color: var(--success);
    padding: 2px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
}
.timeline-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--text-primary);
}
.timeline-company {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--accent-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}
.timeline-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* === Skills === */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}
.skill-category-card {
    padding: 32px;
}
.skill-category-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}
.skill-category-header i {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    color: #fff;
    font-size: 1.1rem;
}
.skill-category-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}
.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.skill-tag {
    padding: 6px 16px;
    border-radius: var(--radius-xl);
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
}
.skill-tag:hover {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-tertiary);
    border-color: var(--accent-primary);
}

/* === Education === */
.education-grid,
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}
.education-card,
.certificate-card {
    padding: 32px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
}
.edu-icon,
.cert-icon {
    width: 52px;
    height: 52px;
    min-width: 52px;
    border-radius: var(--radius-md);
    background: var(--accent-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.3rem;
}
.edu-content h3,
.cert-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.edu-degree, .edu-date, .edu-activities,
.cert-issuer, .cert-date {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}
.edu-degree i, .edu-date i, .edu-activities i,
.cert-issuer i, .cert-date i {
    color: var(--accent-primary);
    font-size: 0.8rem;
    width: 16px;
}
.cert-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--accent-tertiary);
    font-weight: 500;
}
.cert-link:hover { color: var(--accent-primary); }

/* === Contact === */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 32px;
    max-width: 1000px;
    margin: 0 auto;
}
.contact-info-card {
    padding: 32px;
    height: 100%;
}
.contact-info-card h3 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 24px;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}
.contact-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    border-radius: var(--radius-md);
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}
.contact-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 2px;
}
.contact-item a, .contact-item span {
    font-size: 0.95rem;
    color: var(--text-primary);
}
.contact-social {
    display: flex;
    gap: 12px;
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--border-glass);
}
.contact-form {
    padding: 32px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
    background: rgba(6, 6, 15, 0.6);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    transition: var(--transition);
    outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* === Footer === */
.footer {
    padding: 48px 0 32px;
    border-top: 1px solid var(--border-glass);
    background: var(--bg-secondary);
}
.footer-content {
    text-align: center;
}
.footer-logo {
    font-family: var(--font-mono);
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
}
.footer-links {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 24px;
}
.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}
.footer-links a:hover { color: var(--accent-tertiary); }
.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* === Animations === */
.animate-fade-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}
.delay-1 { animation-delay: 0.15s; }
.delay-2 { animation-delay: 0.3s; }
.delay-3 { animation-delay: 0.45s; }
.delay-4 { animation-delay: 0.6s; }
.delay-5 { animation-delay: 0.75s; }

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

/* Scroll reveal */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(6, 6, 15, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 80px 32px 32px;
        gap: 4px;
        transition: var(--transition);
        border-left: 1px solid var(--border-glass);
    }
    .nav-menu.active { right: 0; }
    .nav-toggle { display: flex; }
    .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); }

    .timeline::before { left: 20px; }
    .timeline-item { width: 100%; left: 0 !important; padding-left: 50px !important; padding-right: 16px !important; }
    .timeline-dot { left: 12px !important; right: auto !important; }

    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .education-grid,
    .certificates-grid { grid-template-columns: 1fr; }
    .education-card,
    .certificate-card { flex-direction: column; text-align: center; align-items: center; }

    .hero-name { font-size: 2.4rem; }
}

@media (max-width: 480px) {
    .about-card { padding: 24px; }
    .about-stats { grid-template-columns: 1fr 1fr; gap: 12px; }
    .stat-number { font-size: 1.8rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .skills-grid { grid-template-columns: 1fr; }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--accent-secondary); }

/* === Selection === */
::selection {
    background: rgba(99, 102, 241, 0.3);
    color: #fff;
}