/* ============================================
   HASNAA SALMOUNI - PORTFOLIO STYLES
   Modern, Elegant, Premium Design
   ============================================ */

/* CSS Custom Properties (Variables) */
:root {
    --primary: #7C3AED;
    --primary-light: #A855F7;
    --accent: #EC4899;
    --background: #0F172A;
    --surface: #1E293B;
    --surface-light: #334155;
    --text: #F8FAFC;
    --text-muted: #94A3B8;
    --text-dim: #64748B;
    --border: rgba(148, 163, 184, 0.1);
    --border-hover: rgba(148, 163, 184, 0.2);
    --gradient-primary: linear-gradient(135deg, #7C3AED 0%, #A855F7 50%, #EC4899 100%);
    --gradient-surface: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(124, 58, 237, 0.15);
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

[data-theme="light"] {
    --background: #F8FAFC;
    --surface: #FFFFFF;
    --surface-light: #F1F5F9;
    --text: #0F172A;
    --text-muted: #64748B;
    --text-dim: #94A3B8;
    --border: rgba(148, 163, 184, 0.2);
    --border-hover: rgba(148, 163, 184, 0.3);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font-sans); background-color: var(--background); color: var(--text); line-height: 1.6; overflow-x: hidden; transition: background-color var(--transition-base), color var(--transition-base); }
img, svg { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; transition: color var(--transition-fast); }
button { cursor: pointer; border: none; background: none; font-family: inherit; color: inherit; }
ul, ol { list-style: none; }
::selection { background-color: var(--primary); color: white; }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--background); }
::-webkit-scrollbar-thumb { background: var(--surface-light); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* Loader */
.loader { position: fixed; inset: 0; z-index: 9999; background: var(--background); display: flex; align-items: center; justify-content: center; transition: opacity 0.5s ease, visibility 0.5s ease; }
.loader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
.loader-content { text-align: center; }
.loader-spinner { width: 48px; height: 48px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 1s linear infinite; margin: 0 auto var(--space-4); }
.loader-text { font-size: var(--text-sm); color: var(--text-muted); font-family: var(--font-mono); letter-spacing: 0.05em; }
@keyframes spin { to { transform: rotate(360deg); } }

/* Scroll Progress */
.scroll-progress { position: fixed; top: 0; left: 0; height: 3px; background: var(--gradient-primary); z-index: 1001; width: 0%; transition: width 0.1s linear; }

/* Navigation */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: var(--space-4) 0; transition: background-color var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base); }
.nav.scrolled { background-color: rgba(15, 23, 42, 0.85); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); box-shadow: var(--shadow-md); }
[data-theme="light"] .nav.scrolled { background-color: rgba(248, 250, 252, 0.85); }
.nav-container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-6); display: flex; align-items: center; justify-content: space-between; }
.nav-logo { font-family: var(--font-mono); font-size: var(--text-lg); font-weight: 600; display: flex; align-items: center; gap: 2px; }
.nav-logo-bracket { color: var(--primary); }
.nav-logo-text { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.nav-menu { display: flex; align-items: center; gap: var(--space-1); }
.nav-link { padding: var(--space-2) var(--space-4); font-size: var(--text-sm); font-weight: 500; color: var(--text-muted); border-radius: var(--radius-md); transition: color var(--transition-fast), background-color var(--transition-fast); position: relative; }
.nav-link:hover { color: var(--text); background-color: var(--border); }
.nav-link.active { color: var(--text); background-color: var(--border); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 20px; height: 2px; background: var(--gradient-primary); border-radius: var(--radius-full); }
.nav-actions { display: flex; align-items: center; gap: var(--space-3); }
.theme-toggle { width: 40px; height: 40px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: color var(--transition-fast), background-color var(--transition-fast); position: relative; overflow: hidden; }
.theme-toggle:hover { color: var(--text); background-color: var(--border); }
.theme-icon { width: 20px; height: 20px; position: absolute; transition: transform var(--transition-base), opacity var(--transition-base); }
.theme-icon.sun { opacity: 0; transform: rotate(90deg) scale(0); }
.theme-icon.moon { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-icon.sun { opacity: 1; transform: rotate(0) scale(1); }
[data-theme="light"] .theme-icon.moon { opacity: 0; transform: rotate(-90deg) scale(0); }
.nav-toggle { display: none; width: 40px; height: 40px; flex-direction: column; align-items: center; justify-content: center; gap: 5px; border-radius: var(--radius-md); transition: background-color var(--transition-fast); }
.nav-toggle:hover { background-color: var(--border); }
.nav-toggle-bar { display: block; width: 22px; height: 2px; background: var(--text); border-radius: var(--radius-full); transition: transform var(--transition-base), opacity var(--transition-base); }
.nav-toggle.active .nav-toggle-bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active .nav-toggle-bar:nth-child(2) { opacity: 0; }
.nav-toggle.active .nav-toggle-bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden; padding-top: 80px; }
.hero-bg { position: absolute; inset: 0; z-index: 0; overflow: hidden; }
.hero-gradient { position: absolute; width: 600px; height: 600px; border-radius: 50%; background: radial-gradient(circle, rgba(124, 58, 237, 0.15) 0%, transparent 70%); top: -200px; right: -200px; animation: float 8s ease-in-out infinite; }
.hero-gradient::before { content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: radial-gradient(circle, rgba(236, 72, 153, 0.1) 0%, transparent 70%); bottom: -300px; left: -100px; animation: float 10s ease-in-out infinite reverse; }
@keyframes float { 0%, 100% { transform: translate(0, 0); } 50% { transform: translate(30px, -30px); } }
.hero-particles { position: absolute; inset: 0; z-index: 0; }
.particle { position: absolute; width: 4px; height: 4px; background: var(--primary); border-radius: 50%; opacity: 0.3; animation: particle-float 15s linear infinite; }
@keyframes particle-float { 0% { transform: translateY(100vh) rotate(0deg); opacity: 0; } 10% { opacity: 0.3; } 90% { opacity: 0.3; } 100% { transform: translateY(-100vh) rotate(720deg); opacity: 0; } }
.hero-container { position: relative; z-index: 1; max-width: 1280px; margin: 0 auto; padding: 0 var(--space-6); width: 100%; display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: var(--space-2); padding: var(--space-2) var(--space-4); background: var(--border); border: 1px solid var(--border-hover); border-radius: var(--radius-full); font-size: var(--text-sm); color: var(--text-muted); margin-bottom: var(--space-6); animation: fadeInUp 0.6s ease 0.2s both; }
.hero-badge-dot { width: 8px; height: 8px; background: #22C55E; border-radius: 50%; animation: pulse 2s ease infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.2); } }
.hero-title { margin-bottom: var(--space-4); animation: fadeInUp 0.6s ease 0.3s both; }
.hero-greeting { display: block; font-size: var(--text-xl); font-weight: 400; color: var(--text-muted); margin-bottom: var(--space-2); }
.hero-name { display: block; font-size: var(--text-5xl); font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; line-height: 1.1; letter-spacing: -0.02em; }
.hero-typing { font-family: var(--font-mono); font-size: var(--text-xl); color: var(--primary-light); margin-bottom: var(--space-6); min-height: 2rem; animation: fadeInUp 0.6s ease 0.4s both; }
.typing-cursor { animation: blink 1s step-end infinite; }
@keyframes blink { 50% { opacity: 0; } }
.hero-description { font-size: var(--text-lg); color: var(--text-muted); max-width: 540px; margin-bottom: var(--space-8); line-height: 1.7; animation: fadeInUp 0.6s ease 0.5s both; }
.hero-cta { display: flex; gap: var(--space-4); margin-bottom: var(--space-8); animation: fadeInUp 0.6s ease 0.6s both; }
.hero-social { display: flex; gap: var(--space-3); animation: fadeInUp 0.6s ease 0.7s both; }
.hero-social-link { width: 44px; height: 44px; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; background: var(--surface); border: 1px solid var(--border); color: var(--text-muted); transition: all var(--transition-base); }
.hero-social-link:hover { background: var(--primary); border-color: var(--primary); color: white; transform: translateY(-3px); box-shadow: 0 10px 20px rgba(124, 58, 237, 0.3); }
.hero-social-link svg { width: 20px; height: 20px; }

/* Hero Visual */
.hero-visual { display: flex; justify-content: center; align-items: center; animation: fadeIn 0.8s ease 0.5s both; }
.hero-image-wrapper { position: relative; width: 400px; height: 400px; }
.hero-image-glow { position: absolute; inset: -20px; background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%); border-radius: 50%; animation: pulse-glow 4s ease-in-out infinite; }
@keyframes pulse-glow { 0%, 100% { opacity: 0.5; transform: scale(1); } 50% { opacity: 0.8; transform: scale(1.05); } }
.hero-image-ring { position: absolute; inset: 0; border: 2px solid var(--border); border-radius: 50%; animation: rotate 20s linear infinite; }
.hero-image-ring::before { content: ''; position: absolute; inset: -20px; border: 1px dashed var(--border); border-radius: 50%; animation: rotate 30s linear infinite reverse; }
@keyframes rotate { to { transform: rotate(360deg); } }
.hero-image { position: absolute; inset: 40px; display: flex; align-items: center; justify-content: center; }
.hero-image svg { width: 100%; height: 100%; }
.hero-floating-card { position: absolute; padding: var(--space-3) var(--space-4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-sm); font-weight: 500; box-shadow: var(--shadow-md); animation: float-card 6s ease-in-out infinite; }
.card-1 { top: 20px; right: -20px; animation-delay: 0s; }
.card-2 { bottom: 80px; left: -30px; animation-delay: 2s; }
.card-3 { bottom: 20px; right: 20px; animation-delay: 4s; }
.card-icon { font-family: var(--font-mono); color: var(--primary); font-size: var(--text-xs); }
.card-text { color: var(--text); }
@keyframes float-card { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-15px); } }
.hero-scroll { position: absolute; bottom: var(--space-8); left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: var(--space-2); color: var(--text-muted); font-size: var(--text-xs); letter-spacing: 0.1em; text-transform: uppercase; animation: fadeIn 0.6s ease 1s both; }
.hero-scroll-line { width: 1px; height: 40px; background: var(--border); position: relative; overflow: hidden; }
.hero-scroll-dot { width: 3px; height: 3px; background: var(--primary); border-radius: 50%; position: absolute; top: 0; left: 50%; transform: translateX(-50%); animation: scroll-dot 2s ease-in-out infinite; }
@keyframes scroll-dot { 0% { top: 0; opacity: 1; } 100% { top: 100%; opacity: 0; } }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); padding: var(--space-3) var(--space-6); font-family: var(--font-sans); font-size: var(--text-sm); font-weight: 600; border-radius: var(--radius-lg); transition: all var(--transition-base); cursor: pointer; border: none; position: relative; overflow: hidden; }
.btn svg { width: 18px; height: 18px; transition: transform var(--transition-base); }
.btn-primary { background: var(--gradient-primary); color: white; box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(124, 58, 237, 0.5); }
.btn-primary:hover svg { transform: translateX(3px); }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border-hover); }
.btn-outline:hover { background: var(--border); border-color: var(--primary); color: var(--primary); }
.btn-large { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }
.btn-submit { width: 100%; position: relative; }
.btn-loader { position: absolute; inset: 0; display: none; align-items: center; justify-content: center; background: var(--gradient-primary); }
.btn-loader::after { content: ''; width: 20px; height: 20px; border: 2px solid rgba(255,255,255,0.3); border-top-color: white; border-radius: 50%; animation: spin 0.8s linear infinite; }
.btn.loading .btn-text, .btn.loading .btn-icon { opacity: 0; }
.btn.loading .btn-loader { display: flex; }

/* Sections */
section { position: relative; padding: var(--space-24) 0; }
.section-container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-6); }
.section-header { text-align: center; margin-bottom: var(--space-16); }
.section-tag { display: inline-block; padding: var(--space-2) var(--space-4); background: var(--border); border: 1px solid var(--border-hover); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 500; color: var(--primary-light); margin-bottom: var(--space-4); font-family: var(--font-mono); }
.section-title { font-size: var(--text-4xl); font-weight: 800; line-height: 1.2; margin-bottom: var(--space-4); letter-spacing: -0.02em; }
.section-subtitle { font-size: var(--text-lg); color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: start; }
.about-content { display: flex; flex-direction: column; gap: var(--space-8); }
.about-text { display: flex; flex-direction: column; gap: var(--space-4); }
.about-paragraph { font-size: var(--text-lg); color: var(--text-muted); line-height: 1.8; }
.about-paragraph strong { color: var(--text); font-weight: 600; }
.about-mission { position: relative; padding: var(--space-6); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); font-style: italic; font-size: var(--text-base); }
.mission-quote { font-size: var(--text-3xl); color: var(--primary); line-height: 1; font-family: Georgia, serif; }
.about-info { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.info-item { padding: var(--space-4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); display: flex; flex-direction: column; gap: var(--space-1); transition: border-color var(--transition-fast); }
.info-item:hover { border-color: var(--border-hover); }
.info-label { font-size: var(--text-xs); color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.info-value { font-size: var(--text-sm); font-weight: 600; color: var(--text); }
.info-value--active { color: #22C55E; }
.about-stats { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
.stat-card { padding: var(--space-6); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); text-align: center; transition: all var(--transition-base); position: relative; overflow: hidden; }
.stat-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); opacity: 0; transition: opacity var(--transition-base); }
.stat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-glow); border-color: var(--primary); }
.stat-card:hover::before { opacity: 1; }
.stat-icon { width: 48px; height: 48px; margin: 0 auto var(--space-4); display: flex; align-items: center; justify-content: center; background: var(--border); border-radius: var(--radius-lg); color: var(--primary); }
.stat-icon svg { width: 24px; height: 24px; }
.stat-number { font-size: var(--text-3xl); font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: var(--space-2); font-family: var(--font-mono); }
.stat-label { font-size: var(--text-sm); color: var(--text-muted); }

/* Skills */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); margin-bottom: var(--space-16); }
.skill-category { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: var(--space-6); transition: all var(--transition-base); }
.skill-category:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); transform: translateY(-3px); }
.skill-category-header { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-6); padding-bottom: var(--space-4); border-bottom: 1px solid var(--border); }
.skill-category-icon { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: var(--radius-lg); color: white; }
.skill-category-icon svg { width: 20px; height: 20px; }
.skill-category-title { font-size: var(--text-lg); font-weight: 600; color: var(--text); }
.skill-items { display: flex; flex-direction: column; gap: var(--space-4); }
.skill-item { display: flex; flex-direction: column; gap: var(--space-2); }
.skill-info { display: flex; justify-content: space-between; align-items: center; }
.skill-name { font-size: var(--text-sm); font-weight: 500; color: var(--text); }
.skill-percent { font-size: var(--text-xs); font-family: var(--font-mono); color: var(--primary-light); font-weight: 600; }
.skill-bar { height: 6px; background: var(--border); border-radius: var(--radius-full); overflow: hidden; position: relative; }
.skill-progress { height: 100%; background: var(--gradient-primary); border-radius: var(--radius-full); width: 0; transition: width 1.5s cubic-bezier(0.34, 1.56, 0.64, 1); position: relative; }
.skill-progress::after { content: ''; position: absolute; right: 0; top: 0; bottom: 0; width: 20px; background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3)); border-radius: var(--radius-full); }
.tech-badges { text-align: center; }
.tech-badges-title { font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-6); color: var(--text); }
.tech-badges-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: var(--space-3); }
.tech-badge { padding: var(--space-2) var(--space-4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 500; color: var(--text-muted); transition: all var(--transition-base); cursor: default; }
.tech-badge:hover { background: var(--gradient-primary); border-color: transparent; color: white; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3); }

/* Projects */
.projects-filter { display: flex; justify-content: center; gap: var(--space-3); margin-bottom: var(--space-8); flex-wrap: wrap; }
.filter-btn { padding: var(--space-2) var(--space-5); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-full); font-size: var(--text-sm); font-weight: 500; color: var(--text-muted); transition: all var(--transition-base); }
.filter-btn:hover { border-color: var(--border-hover); color: var(--text); }
.filter-btn.active { background: var(--gradient-primary); border-color: transparent; color: white; box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3); }
.projects-search { max-width: 600px; margin: 0 auto var(--space-12); }
.search-box { position: relative; }
.search-icon { position: absolute; left: var(--space-4); top: 50%; transform: translateY(-50%); width: 20px; height: 20px; color: var(--text-dim); pointer-events: none; }
.search-box input { width: 100%; padding: var(--space-4) var(--space-4) var(--space-4) var(--space-12); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); font-family: var(--font-sans); font-size: var(--text-base); color: var(--text); transition: all var(--transition-base); }
.search-box input::placeholder { color: var(--text-dim); }
.search-box input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1); }
.projects-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(380px, 1fr)); gap: var(--space-8); }
.project-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-2xl); overflow: hidden; transition: all var(--transition-base); display: flex; flex-direction: column; }
.project-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-glow); border-color: var(--primary); }
.project-card.hidden { display: none; }
.project-image { position: relative; aspect-ratio: 16/10; overflow: hidden; background: var(--gradient-surface); }
.project-image-placeholder { width: 100%; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: var(--space-3); background: linear-gradient(135deg, rgba(124, 58, 237, 0.1) 0%, rgba(236, 72, 153, 0.05) 100%); }
.project-image-placeholder--gradient { background: linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(124, 58, 237, 0.05) 100%); }
.project-image-placeholder--coming { background: linear-gradient(135deg, rgba(148, 163, 184, 0.1) 0%, rgba(100, 116, 139, 0.05) 100%); }
.project-image-placeholder svg { width: 48px; height: 48px; color: var(--primary); opacity: 0.5; }
.project-image-placeholder span { font-family: var(--font-mono); font-size: var(--text-lg); font-weight: 600; color: var(--text-muted); }
.project-overlay { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.8); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity var(--transition-base); }
.project-card:hover .project-overlay { opacity: 1; }
.project-link { width: 56px; height: 56px; border-radius: 50%; background: var(--gradient-primary); display: flex; align-items: center; justify-content: center; color: white; transform: scale(0.8); transition: transform var(--transition-bounce); }
.project-card:hover .project-link { transform: scale(1); }
.project-link svg { width: 24px; height: 24px; }
.project-content { padding: var(--space-6); flex: 1; display: flex; flex-direction: column; }
.project-tags { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-4); }
.project-tag { padding: var(--space-1) var(--space-3); background: var(--border); border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 500; color: var(--primary-light); font-family: var(--font-mono); }
.project-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); color: var(--text); }
.project-description { font-size: var(--text-sm); color: var(--text-muted); line-height: 1.6; margin-bottom: var(--space-4); flex: 1; }
.project-features { display: flex; flex-direction: column; gap: var(--space-1); margin-bottom: var(--space-6); }
.project-feature { font-size: var(--text-sm); color: var(--text-dim); display: flex; align-items: center; gap: var(--space-2); }
.project-links { display: flex; gap: var(--space-3); }
.project-btn { flex: 1; display: flex; align-items: center; justify-content: center; gap: var(--space-2); padding: var(--space-3) var(--space-4); background: var(--border); border: 1px solid var(--border); border-radius: var(--radius-lg); font-size: var(--text-sm); font-weight: 600; color: var(--text); transition: all var(--transition-base); }
.project-btn:hover { background: var(--primary); border-color: var(--primary); color: white; }
.project-btn svg { width: 16px; height: 16px; }
.project-btn--secondary:hover { background: var(--accent); border-color: var(--accent); }
.project-card--coming-soon { opacity: 0.7; }
.project-card--coming-soon:hover { opacity: 1; }

/* Education Timeline */
.timeline { position: relative; max-width: 800px; margin: 0 auto; }
.timeline-line { position: absolute; left: 24px; top: 0; bottom: 0; width: 2px; background: linear-gradient(to bottom, var(--primary), var(--accent)); border-radius: var(--radius-full); }
.timeline-item { position: relative; padding-left: 80px; padding-bottom: var(--space-12); }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-marker { position: absolute; left: 0; top: 0; width: 50px; height: 50px; display: flex; align-items: center; justify-content: center; }
.timeline-dot { width: 16px; height: 16px; background: var(--gradient-primary); border-radius: 50%; position: relative; z-index: 1; }
.timeline-ring { position: absolute; width: 32px; height: 32px; border: 2px solid var(--primary); border-radius: 50%; opacity: 0.3; animation: pulse-ring 2s ease-in-out infinite; }
@keyframes pulse-ring { 0%, 100% { transform: scale(1); opacity: 0.3; } 50% { transform: scale(1.3); opacity: 0.1; } }
.timeline-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: var(--space-6); transition: all var(--transition-base); }
.timeline-card:hover { border-color: var(--border-hover); box-shadow: var(--shadow-md); }
.timeline-date { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.timeline-year { font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 600; color: var(--primary-light); }
.timeline-status { padding: var(--space-1) var(--space-3); background: rgba(34, 197, 94, 0.1); color: #22C55E; border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 600; }
.timeline-status--completed { background: rgba(148, 163, 184, 0.1); color: var(--text-muted); }
.timeline-status--active { background: rgba(124, 58, 237, 0.1); color: var(--primary); }
.timeline-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-2); color: var(--text); }
.timeline-institution { font-size: var(--text-sm); color: var(--text-muted); margin-bottom: var(--space-4); }
.timeline-description { font-size: var(--text-base); color: var(--text-muted); line-height: 1.7; margin-bottom: var(--space-4); }
.timeline-courses { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.timeline-course { padding: var(--space-1) var(--space-3); background: var(--border); border-radius: var(--radius-full); font-size: var(--text-xs); color: var(--text-muted); font-weight: 500; }

/* Experience */
.experience-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.experience-card { padding: var(--space-8); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); transition: all var(--transition-base); position: relative; overflow: hidden; }
.experience-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-primary); opacity: 0; transition: opacity var(--transition-base); }
.experience-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-glow); border-color: var(--primary); }
.experience-card:hover::before { opacity: 1; }
.experience-icon { width: 56px; height: 56px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: var(--radius-lg); color: white; margin-bottom: var(--space-6); }
.experience-icon svg { width: 28px; height: 28px; }
.experience-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); color: var(--text); }
.experience-description { font-size: var(--text-base); color: var(--text-muted); line-height: 1.7; margin-bottom: var(--space-6); }
.experience-stats { display: flex; gap: var(--space-3); }
.experience-stat { padding: var(--space-1) var(--space-3); background: var(--border); border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 600; color: var(--primary-light); font-family: var(--font-mono); }

/* GitHub */
.github-showcase { display: flex; flex-direction: column; gap: var(--space-16); }
.github-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }
.github-stat-card { padding: var(--space-8); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); text-align: center; transition: all var(--transition-base); }
.github-stat-card:hover { transform: translateY(-5px); border-color: var(--primary); box-shadow: var(--shadow-glow); }
.github-stat-icon { width: 56px; height: 56px; margin: 0 auto var(--space-4); display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: var(--radius-lg); color: white; }
.github-stat-icon svg { width: 28px; height: 28px; }
.github-stat-number { font-size: var(--text-2xl); font-weight: 800; background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; margin-bottom: var(--space-2); font-family: var(--font-mono); }
.github-stat-label { font-size: var(--text-sm); color: var(--text-muted); }
.github-contribution { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); padding: var(--space-8); }
.github-contribution-title { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-6); color: var(--text); }
.contribution-header { display: flex; align-items: center; justify-content: flex-end; gap: var(--space-2); margin-bottom: var(--space-4); }
.contribution-label { font-size: var(--text-xs); color: var(--text-dim); }
.contribution-legend { display: flex; gap: 3px; }
.contribution-level { width: 10px; height: 10px; border-radius: 2px; }
.level-0 { background: var(--border); }
.level-1 { background: rgba(124, 58, 237, 0.3); }
.level-2 { background: rgba(124, 58, 237, 0.5); }
.level-3 { background: rgba(124, 58, 237, 0.7); }
.level-4 { background: var(--primary); }
.contribution-grid { display: grid; grid-template-columns: repeat(53, 1fr); gap: 3px; overflow-x: auto; padding-bottom: var(--space-4); }
.contribution-cell { aspect-ratio: 1; border-radius: 2px; min-width: 10px; transition: transform var(--transition-fast); }
.contribution-cell:hover { transform: scale(1.3); z-index: 1; }
.github-repos-title { font-size: var(--text-lg); font-weight: 600; margin-bottom: var(--space-6); color: var(--text); }
.github-repos-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.github-repo-card { padding: var(--space-6); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-xl); transition: all var(--transition-base); display: block; }
.github-repo-card:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); transform: translateY(-3px); }
.github-repo-header { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.github-repo-header svg { width: 20px; height: 20px; color: var(--text-dim); flex-shrink: 0; }
.github-repo-name { font-size: var(--text-base); font-weight: 600; color: var(--text); font-family: var(--font-mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.github-repo-desc { font-size: var(--text-sm); color: var(--text-muted); line-height: 1.6; margin-bottom: var(--space-4); }
.github-repo-meta { display: flex; align-items: center; gap: var(--space-4); }
.github-repo-lang { display: flex; align-items: center; gap: var(--space-2); font-size: var(--text-xs); color: var(--text-muted); }
.lang-dot { width: 10px; height: 10px; border-radius: 50%; }
.github-repo-updated { font-size: var(--text-xs); color: var(--text-dim); }
.github-cta { text-align: center; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); align-items: start; }
.contact-info { display: flex; flex-direction: column; gap: var(--space-8); }
.contact-info-title { font-size: var(--text-2xl); font-weight: 700; color: var(--text); }
.contact-info-desc { font-size: var(--text-base); color: var(--text-muted); line-height: 1.7; }
.contact-links { display: flex; flex-direction: column; gap: var(--space-4); }
.contact-link { display: flex; align-items: center; gap: var(--space-4); padding: var(--space-4); background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); transition: all var(--transition-base); }
.contact-link:hover { border-color: var(--primary); box-shadow: var(--shadow-glow); transform: translateX(5px); }
.contact-link-icon { width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: var(--radius-lg); color: white; flex-shrink: 0; }
.contact-link-icon svg { width: 24px; height: 24px; }
.contact-link-content { display: flex; flex-direction: column; gap: var(--space-1); }
.contact-link-label { font-size: var(--text-xs); color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.contact-link-value { font-size: var(--text-sm); font-weight: 600; color: var(--text); }
.contact-form-wrapper { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-2xl); padding: var(--space-8); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-6); }
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-label { font-size: var(--text-sm); font-weight: 500; color: var(--text); }
.form-input, .form-textarea { padding: var(--space-4); background: var(--background); border: 1px solid var(--border); border-radius: var(--radius-lg); font-family: var(--font-sans); font-size: var(--text-base); color: var(--text); transition: all var(--transition-base); resize: vertical; }
.form-input::placeholder, .form-textarea::placeholder { color: var(--text-dim); }
.form-input:focus, .form-textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1); }
.form-input.error, .form-textarea.error { border-color: #EF4444; }
.form-error { font-size: var(--text-xs); color: #EF4444; display: none; }
.form-error.show { display: block; }
.form-success { display: none; align-items: center; gap: var(--space-3); padding: var(--space-4); background: rgba(34, 197, 94, 0.1); border: 1px solid rgba(34, 197, 94, 0.2); border-radius: var(--radius-lg); color: #22C55E; font-size: var(--text-sm); font-weight: 500; }
.form-success.show { display: flex; }
.form-success svg { width: 20px; height: 20px; flex-shrink: 0; }

/* Footer */
.footer { border-top: 1px solid var(--border); padding: var(--space-16) 0 var(--space-8); }
.footer-container { max-width: 1280px; margin: 0 auto; padding: 0 var(--space-6); }
.footer-top { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-16); margin-bottom: var(--space-12); }
.footer-logo { font-family: var(--font-mono); font-size: var(--text-xl); font-weight: 600; display: flex; align-items: center; gap: 2px; margin-bottom: var(--space-4); }
.footer-logo-bracket { color: var(--primary); }
.footer-logo-text { background: var(--gradient-primary); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.footer-tagline { font-size: var(--text-base); color: var(--text-muted); max-width: 300px; line-height: 1.6; }
.footer-links { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8); }
.footer-links-title { font-size: var(--text-sm); font-weight: 600; color: var(--text); margin-bottom: var(--space-4); text-transform: uppercase; letter-spacing: 0.05em; }
.footer-link { display: block; font-size: var(--text-sm); color: var(--text-muted); padding: var(--space-2) 0; transition: color var(--transition-fast), transform var(--transition-fast); }
.footer-link:hover { color: var(--primary); transform: translateX(3px); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; padding-top: var(--space-8); border-top: 1px solid var(--border); }
.footer-copyright { font-size: var(--text-sm); color: var(--text-dim); }
.footer-social { display: flex; gap: var(--space-3); }
.footer-social-link { width: 40px; height: 40px; border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; background: var(--surface); border: 1px solid var(--border); color: var(--text-muted); transition: all var(--transition-base); }
.footer-social-link:hover { background: var(--primary); border-color: var(--primary); color: white; transform: translateY(-2px); }
.footer-social-link svg { width: 18px; height: 18px; }

/* Back to Top */
.back-to-top { position: fixed; bottom: var(--space-6); right: var(--space-6); width: 48px; height: 48px; border-radius: var(--radius-lg); background: var(--gradient-primary); color: white; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden; transform: translateY(20px); transition: all var(--transition-base); z-index: 999; }
.back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(124, 58, 237, 0.4); }
.back-to-top svg { width: 20px; height: 20px; }

/* Modal */
.modal { position: fixed; inset: 0; z-index: 2000; display: flex; align-items: center; justify-content: center; opacity: 0; visibility: hidden; transition: all var(--transition-base); }
.modal.show { opacity: 1; visibility: visible; }
.modal-overlay { position: absolute; inset: 0; background: rgba(15, 23, 42, 0.8); backdrop-filter: blur(4px); }
.modal-content { position: relative; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-2xl); padding: var(--space-8); max-width: 400px; width: 90%; text-align: center; transform: scale(0.9); transition: transform var(--transition-base); box-shadow: var(--shadow-lg); }
.modal.show .modal-content { transform: scale(1); }
.modal-close { position: absolute; top: var(--space-4); right: var(--space-4); width: 36px; height: 36px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; color: var(--text-muted); transition: all var(--transition-fast); }
.modal-close:hover { background: var(--border); color: var(--text); }
.modal-close svg { width: 20px; height: 20px; }
.modal-icon { width: 64px; height: 64px; margin: 0 auto var(--space-4); display: flex; align-items: center; justify-content: center; background: var(--gradient-primary); border-radius: 50%; color: white; }
.modal-icon svg { width: 32px; height: 32px; }
.modal-title { font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-3); color: var(--text); }
.modal-text { font-size: var(--text-base); color: var(--text-muted); margin-bottom: var(--space-6); line-height: 1.6; }

/* Animations */
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes fadeInDown { from { opacity: 0; transform: translateY(-30px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideInLeft { from { opacity: 0; transform: translateX(-50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slideInRight { from { opacity: 0; transform: translateX(50px); } to { opacity: 1; transform: translateX(0); } }
@keyframes scaleIn { from { opacity: 0; transform: scale(0.9); } to { opacity: 1; transform: scale(1); } }

/* Reveal Animation */
.reveal { opacity: 0; transform: translateY(40px); transition: opacity 0.8s ease, transform 0.8s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Responsive */
@media (max-width: 1024px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; gap: var(--space-12); }
    .hero-description { margin: 0 auto var(--space-8); }
    .hero-cta { justify-content: center; }
    .hero-social { justify-content: center; }
    .hero-visual { display: none; }
    .about-grid { grid-template-columns: 1fr; gap: var(--space-12); }
    .skills-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; gap: var(--space-12); }
    .github-stats { grid-template-columns: repeat(2, 1fr); }
    .github-repos-grid { grid-template-columns: 1fr; }
    .experience-grid { grid-template-columns: 1fr; }
    .footer-top { grid-template-columns: 1fr; gap: var(--space-8); }
}

@media (max-width: 768px) {
    .nav-menu { position: fixed; top: 0; right: -100%; width: 80%; max-width: 300px; height: 100vh; background: var(--surface); flex-direction: column; padding: var(--space-20) var(--space-8); gap: var(--space-4); border-left: 1px solid var(--border); transition: right var(--transition-base); z-index: 999; }
    .nav-menu.active { right: 0; }
    .nav-toggle { display: flex; z-index: 1000; }
    .hero-name { font-size: var(--text-4xl); }
    .section-title { font-size: var(--text-3xl); }
    .skills-grid { grid-template-columns: 1fr; }
    .projects-grid { grid-template-columns: 1fr; }
    .about-stats { grid-template-columns: 1fr 1fr; }
    .github-stats { grid-template-columns: 1fr 1fr; }
    .contribution-grid { grid-template-columns: repeat(26, 1fr); }
    .timeline-item { padding-left: 60px; }
    .timeline-line { left: 16px; }
    .timeline-marker { width: 36px; height: 36px; }
    .timeline-dot { width: 12px; height: 12px; }
    .timeline-ring { width: 24px; height: 24px; }
}

@media (max-width: 480px) {
    .hero-name { font-size: var(--text-3xl); }
    .hero-greeting { font-size: var(--text-lg); }
    .hero-typing { font-size: var(--text-base); }
    .hero-description { font-size: var(--text-base); }
    .section-title { font-size: var(--text-2xl); }
    .about-stats { grid-template-columns: 1fr; }
    .about-info { grid-template-columns: 1fr; }
    .github-stats { grid-template-columns: 1fr; }
    .experience-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--space-4); text-align: center; }
    .footer-links { grid-template-columns: 1fr; }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}

/* Focus Styles */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: var(--radius-sm); }

/* Print Styles */
@media print {
    .nav, .hero-bg, .hero-visual, .hero-scroll, .back-to-top, .theme-toggle, .nav-toggle, .modal, .loader { display: none !important; }
    body { background: white; color: black; }
    section { padding: 2rem 0; page-break-inside: avoid; }
}