:root {
    --bg-dark: #07090e;
    --card-bg: rgba(18, 24, 38, 0.75);
    --border-color: rgba(255, 255, 255, 0.08);
    --primary-cyan: #38bdf8;
    --primary-purple: #818cf8;
    --accent-glow: rgba(56, 189, 248, 0.25);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    line-height: 1.6;
    scroll-behavior: smooth;
    overflow-x: hidden;
}

.container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Sticky Glass Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 9, 14, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #fff;
    text-decoration: none;
}

.logo span { color: var(--primary-cyan); }

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

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

.nav-btn {
    padding: 0.4rem 1rem;
    border: 1px solid var(--primary-cyan);
    border-radius: 6px;
    color: var(--primary-cyan) !important;
}

.nav-btn:hover {
    background: var(--primary-cyan);
    color: #000 !important;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 6rem 0 4rem;
    text-align: center;
}

.hero-glow {
    position: absolute;
    top: 20%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, var(--accent-glow) 0%, rgba(0,0,0,0) 70%);
    filter: blur(60px);
    z-index: -1;
}

.badge {
    display: inline-block;
    padding: 0.35rem 1rem;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: var(--primary-cyan);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.gradient-text {
    font-size: 3.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, #ffffff 0%, var(--primary-cyan) 50%, var(--primary-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
}

.hero h2 {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto 1.5rem;
}

.bio {
    max-width: 750px;
    margin: 0 auto 2rem;
    color: var(--text-muted);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-bottom: 2.5rem;
}

.stat-num {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-cyan);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

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

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-cyan), var(--primary-purple));
    color: #000;
}

.btn-primary:hover {
    box-shadow: 0 0 20px var(--accent-glow);
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-secondary:hover {
    border-color: var(--primary-cyan);
}

/* Sections */
section { padding: 4rem 0; }

.section-title {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

/* Skills Grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

.skill-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    backdrop-filter: blur(10px);
    transition: border-color 0.3s ease;
}

.skill-card i {
    font-size: 1.25rem;
    color: var(--primary-cyan);
}

.skill-card:hover { border-color: var(--primary-cyan); }

/* Category Filter Bar */
.filter-bar {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.filter-btn {
    padding: 0.5rem 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    border-radius: 20px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.filter-btn.active, .filter-btn:hover {
    background: var(--primary-cyan);
    color: #000;
    border-color: var(--primary-cyan);
}

/* Portfolio Cards Grid */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-image {
    height: 180px;
    overflow: hidden;
    background: #000;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.card:hover .card-image img { transform: scale(1.05); }

.placeholder-image {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #111827;
}

.nda-badge {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-muted);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.8rem;
}

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

.tag {
    font-size: 0.75rem;
    color: var(--primary-purple);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.card-content h3 { font-size: 1.2rem; margin-bottom: 0.25rem; }
.tech { color: var(--primary-cyan); font-size: 0.85rem; margin-bottom: 0.75rem; font-weight: 600; }
.card-content p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 1.25rem; flex-grow: 1; }

.card-btn {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    border: 1px solid var(--primary-cyan);
    color: var(--primary-cyan);
    text-decoration: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.card-btn:hover {
    background: var(--primary-cyan);
    color: #000;
}

.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
}

/* FIX: Ensure BOTH iframes and video tags fit the container without breaking layout */
.video-container iframe,
.video-container video {
    position: absolute;
    top: 0; 
    left: 0; 
    width: 100%; 
    height: 100%;
    object-fit: cover;
}

/* Timeline Experience */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    border-left: 2px solid var(--border-color);
    padding-left: 2rem;
}

.timeline-item {
    position: relative;
    margin-bottom: 2.5rem;
}

.timeline-dot {
    position: absolute;
    left: -2.6rem;
    top: 0.25rem;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--primary-cyan);
    box-shadow: 0 0 10px var(--primary-cyan);
}

.timeline-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    border-radius: 10px;
}

.timeline-date { font-size: 0.85rem; color: var(--primary-cyan); font-weight: 600; }
.timeline-content h3 { font-size: 1.2rem; margin: 0.25rem 0; }
.company { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 0.75rem; }
.timeline-content ul { padding-left: 1.25rem; color: var(--text-muted); font-size: 0.95rem; }

/* Contact Box */
.contact-section { text-align: center; }
.contact-box {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.05), rgba(129, 140, 248, 0.05));
    border: 1px solid var(--border-color);
    padding: 3rem 1.5rem;
    border-radius: 16px;
}

.contact-details {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-card {
    padding: 0.75rem 1.25rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    text-decoration: none;
    border-radius: 8px;
    transition: border-color 0.3s ease;
}

.contact-card:hover { border-color: var(--primary-cyan); }

footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-color);
}