:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent: #3b82f6;
    --accent-glow: rgba(59, 130, 246, 0.4);
    --secondary-accent: #8b5cf6;
    --card-bg: rgba(24, 24, 27, 0.6);
    --card-border: rgba(255, 255, 255, 0.08);
    --nav-bg: rgba(10, 10, 10, 0.85);
    --item-bg: #111;
    --btn-text: #fff;
    --title-gradient: linear-gradient(135deg, #fff 0%, #a1a1aa 100%);
    --header-gradient: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
}

[data-theme="light"] {
    --bg-color: #f8fafc;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent: #2563eb;
    --accent-glow: rgba(37, 99, 235, 0.3);
    --secondary-accent: #7c3aed;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(0, 0, 0, 0.05);
    --nav-bg: rgba(255, 255, 255, 0.9);
    --item-bg: #ffffff;
    --btn-text: #fff;
    --title-gradient: linear-gradient(135deg, #0f172a 0%, #64748b 100%);
    --header-gradient: linear-gradient(135deg, #0f172a 0%, var(--accent) 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.5s ease, color 0.5s ease;
}

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

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.glow {
    position: absolute;
    filter: blur(120px);
    border-radius: 50%;
    opacity: 0.4;
    animation: float 20s infinite alternate ease-in-out;
}
[data-theme="light"] .glow { opacity: 0.25; }

.blob-1 {
    top: -10%; left: -10%; width: 500px; height: 500px;
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
}
.blob-2 {
    bottom: -20%; right: -10%; width: 600px; height: 600px;
    background: radial-gradient(circle, var(--secondary-accent) 0%, transparent 70%);
    animation-delay: -5s;
}
.blob-3 {
    top: 40%; left: 50%; width: 400px; height: 400px;
    background: radial-gradient(circle, #0ea5e9 0%, transparent 70%);
    opacity: 0.2; animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(50px, 50px) scale(1.1); }
}

/* NAV SYSTEM PRO */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: var(--nav-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--card-border);
    transition: background 0.5s ease, border-color 0.5s ease;
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* for mobile */
}

.nav-tabs {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tab {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-weight: 600;
    font-size: 1.05rem;
    cursor: pointer;
    padding: 1.5rem 0;
    position: relative;
    transition: color 0.3s ease;
    white-space: nowrap;
}
.nav-tab:hover { color: var(--text-primary); }
.nav-tab.active { color: var(--accent); }
.nav-tab::after {
    content: '';
    position: absolute;
    bottom: 0px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--secondary-accent));
    transform: scaleX(0);
    transition: transform 0.3s ease;
    border-radius: 3px 3px 0 0;
}
.nav-tab.active::after {
    transform: scaleX(1);
}

.nav-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

@media (max-width: 768px) {
    .nav-container { justify-content: center; }
    .nav-controls { display: flex; width: 100%; justify-content: space-between; border-top: 1px solid var(--card-border); padding-top: 0.5rem;}
    .nav-tabs { width: 100%; justify-content: flex-start; padding-top: 0.5rem; }
    .nav-tab { padding: 1rem 0; font-size: 0.9rem; margin-right: -0.5rem; } /* Tighter on mobile */
}

.lang-selector {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}
.lang-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: color 0.3s ease, transform 0.3s ease;
}
.lang-btn:hover { color: var(--text-primary); transform: translateY(-2px); }
.lang-btn.active { color: var(--accent); }

.divider {
    width: 4px; height: 4px; border-radius: 50%; background: var(--card-border);
}

.theme-toggle {
    cursor: pointer;
    font-size: 1.25rem;
    color: var(--text-secondary);
    transition: color 0.3s ease, transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px; height: 35px;
    border-radius: 50%;
    background: var(--card-border);
}
.theme-toggle:hover { color: var(--accent); transform: rotate(15deg); }
[data-theme="dark"] .light-icon { display: none; }
[data-theme="light"] .dark-icon { display: none; }

/* PAGE ROUTING ANIMATIONS */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    padding-top: 8rem;
}
@media (max-width: 768px) {
    .container { padding-top: 11rem; }
}

.page-view {
    display: none;
    opacity: 0;
    animation: fadeIn 0.4s ease forwards;
}
.page-view.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

/* HERO SECTION */
.hero {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: 3rem;
    margin-bottom: 6rem;
}
@media (min-width: 768px) {
    .hero {
        flex-direction: row;
        justify-content: space-between;
        margin-top: 2rem;
        text-align: left;
    }
}
.hero-content { flex: 1; text-align: center; }
@media (min-width: 768px) { .hero-content { text-align: left; } }

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border); border-radius: 2rem; font-size: 0.875rem; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; color: var(--accent); margin-bottom: 1.5rem;
}
[data-theme="light"] .badge { background: rgba(0,0,0,0.03); }

.title {
    font-size: 3.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 1rem; background: var(--title-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; transition: background 0.5s ease;
}
@media (min-width: 768px) { .title { font-size: 5rem; } }

.subtitle { font-size: 1.25rem; font-weight: 300; color: var(--text-secondary); margin-bottom: 3rem; transition: color 0.5s ease; }

.hero-image-wrapper { flex: 1; display: flex; justify-content: center; align-items: center; position: relative; max-width: 450px;}
.hero-image-wrapper::before {
    content: ''; position: absolute; width: 100%; height: 100%; background: linear-gradient(45deg, var(--accent), var(--secondary-accent)); border-radius: 2rem; filter: blur(40px); opacity: 0.3; z-index: -1;
}
.hero-image {
    width: 250px; height: 280px; border-radius: 2rem; overflow: hidden; border: 1px solid var(--card-border); box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5); transform: rotate(3deg); transition: transform 0.5s ease;
}
.hero-image:hover { transform: rotate(0deg) scale(1.02); }
@media (min-width: 768px) { .hero-image { width: 350px; height: 390px; } }
.hero-image img { width: 100%; height: 100%; object-fit: cover; object-position: top center; }

/* GLASS CARD */
.glass-card {
    background: var(--card-bg); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border: 1px solid var(--card-border); border-radius: 1.5rem; padding: 2rem; box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05); position: relative; overflow: hidden; text-align: left; transition: background 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}
@media (min-width: 768px) { .glass-card { padding: 4rem; } }
.glass-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 100%; background: linear-gradient(125deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0) 100%); pointer-events: none;
}
[data-theme="light"] .glass-card::before { background: linear-gradient(125deg, rgba(255,255,255,0.4) 0%, rgba(255,255,255,0) 100%); }

.card-title { font-size: 2rem; font-weight: 700; margin-bottom: 2rem; color: var(--text-primary); }
.card-content p { margin-bottom: 1.5rem; font-size: 1.125rem; color: var(--text-secondary); transition: color 0.5s ease; }
.card-content p:last-child { margin-bottom: 0; }

/* SKILLS SECTION */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}
.skill-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s ease;
}
.skill-card:hover {
    transform: translateY(-5px);
}
.skill-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--title-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.skill-card h4 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--text-primary); }
.skill-card p { font-size: 0.9rem; color: var(--text-secondary); margin: 0; }

.social-icons i {
    font-size: 3rem;
    margin: 0 1rem;
    color: var(--text-primary);
    transition: transform 0.3s ease, color 0.3s ease;
}
.social-icons i:hover { transform: scale(1.2); color: var(--accent); }

/* PORTFOLIO & SECTIONS */
.portfolio-section { margin-bottom: 4rem; }
.section-header { text-align: center; margin-bottom: 3rem; }
.section-header h3 { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; background: var(--header-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; display: inline-block; transition: background 0.5s ease; }
.section-header p { font-size: 1.15rem; color: var(--text-secondary); max-width: 800px; margin: 0 auto; transition: color 0.5s ease; }

.gallery-grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.single-item { max-width: 700px; margin: 0 auto; }
.gallery-item {
    border-radius: 1rem; overflow: hidden; position: relative; background: var(--item-bg); border: 1px solid var(--card-border); transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease; box-shadow: 0 4px 20px rgba(0,0,0,0.1); cursor: pointer;
}
.gallery-item:hover { transform: translateY(-10px); box-shadow: 0 15px 35px rgba(0,0,0,0.2); }
.gallery-item img { width: 100%; height: 100%; display: block; object-fit: cover; aspect-ratio: 16/9; }
.gallery-item[style*="contain"] img { aspect-ratio: auto; }

.item-overlay {
    position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.1) 100%); display: flex; align-items: flex-end; padding: 1.5rem; opacity: 0; transition: opacity 0.3s ease;
}
[data-theme="light"] .item-overlay { background: linear-gradient(to top, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.2) 100%); }
.gallery-item:hover .item-overlay { opacity: 1; }
.item-overlay span { font-size: 1.25rem; font-weight: 600; color: white; transform: translateY(20px); transition: transform 0.3s ease; }
[data-theme="light"] .item-overlay span { color: #0f172a; }
.gallery-item:hover .item-overlay span { transform: translateY(0); }

/* STATS GRID */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}
.stat-card {
    padding: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* POST MOCKUP */
.post-mockup {
    background: var(--item-bg);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    padding: 1.5rem;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    max-width: 600px;
    margin: 0 auto;
}
.post-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}
.post-avatar img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    object-position: top;
}
.post-meta {
    font-size: 0.9rem;
    line-height: 1.2;
}
.post-meta strong {
    color: var(--text-primary);
}
.post-meta span {
    color: var(--text-secondary);
    font-size: 0.8rem;
}
.post-body {
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-primary);
    margin-bottom: 1rem;
}
.post-actions {
    display: flex;
    justify-content: space-between;
    padding-top: 0.5rem;
}
.post-actions button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    flex: 1;
    padding: 0.5rem 0;
    cursor: pointer;
    border-radius: 0.5rem;
    transition: background 0.2s ease, color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}
.post-actions button:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}
[data-theme="light"] .post-actions button:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* LIGHTBOX */
.lightbox {
    display: none; position: fixed; z-index: 2000; left: 0; top: 0; width: 100vw; height: 100vh; background-color: rgba(0, 0, 0, 0.9); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); opacity: 0; transition: opacity 0.3s ease;
}
[data-theme="light"] .lightbox { background-color: rgba(255, 255, 255, 0.9); }
.lightbox.show { display: flex; justify-content: center; align-items: center; opacity: 1; }
.lightbox-content { max-width: 90%; max-height: 90%; border-radius: 1rem; box-shadow: 0 10px 50px rgba(0,0,0,0.5); transform: scale(0.95); transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); object-fit: contain; }
[data-theme="light"] .lightbox-content { box-shadow: 0 10px 50px rgba(0,0,0,0.15); }
.lightbox.show .lightbox-content { transform: scale(1); }
.lightbox-close { position: absolute; top: 30px; right: 40px; color: #fff; font-size: 3rem; font-weight: bold; cursor: pointer; transition: color 0.3s ease, transform 0.3s ease; z-index: 2001; }
[data-theme="light"] .lightbox-close { color: #0f172a; }
.lightbox-close:hover { color: var(--accent); transform: scale(1.1); }

/* FOOTER */
.footer { text-align: center; padding: 2rem; border-top: 1px solid var(--card-border); color: var(--text-secondary); margin-top: 4rem; padding-bottom: 3rem; transition: color 0.5s ease, border-color 0.5s ease; }
.section-fade { opacity: 0; transform: translateY(30px); transition: opacity 0.8s cubic-bezier(0.2, 0.8, 0.2, 1), transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1); }
.section-fade.visible { opacity: 1; transform: translateY(0); }
.fade-text { opacity: 0; transition: opacity 0.3s ease; }