:root {
    --bg-color: #0a0a0c;
    --text-color: #ffffff;
    --accent-color: #00ffcc;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
}

/* ── Canvas ── */
.canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    pointer-events: none;
}

canvas {
    width: 100%;
    height: 100%;
}

/* ── Nav ── */
.glass-nav {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.4rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0,0,0,0.25);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 100;
}

.logo {
    font-weight: 800;
    font-size: 1.1rem;
    letter-spacing: 2px;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: color 0.3s ease;
}

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

/* ── Hero overlay (fixed, fades in on scroll) ── */
.hero-overlay {
    position: fixed;
    bottom: 12%;
    right: 8%;
    z-index: 10;
    text-align: right;
    opacity: 0;
    pointer-events: none;
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: #fff;
    letter-spacing: -1px;
}

.hero-sub {
    font-size: clamp(0.85rem, 1.5vw, 1.1rem);
    color: rgba(255,255,255,0.65);
    margin-top: 0.5rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

/* Left-aligned overlay variant */
.hero-overlay-left {
    right: auto;
    left: 8%;
    text-align: left;
}

/* Experience stat */
.exp-stat {
    font-size: clamp(4rem, 10vw, 8rem);
    font-weight: 800;
    line-height: 1;
    color: #fff;
}

.exp-plus {
    color: var(--accent-color);
}

.exp-label {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: rgba(255,255,255,0.6);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-top: 0.4rem;
}

/* ── Scroll driver ── */
#scroll-driver {
    height: 600vh;
    position: relative;
    z-index: 1;
}

/* ── Main content ── */
.content {
    position: relative;
    z-index: 20;
    background: var(--bg-color);
}

section {
    padding: 8rem 10%;
    max-width: 1100px;
    margin: 0 auto;
}

section h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 2.5rem;
    color: #fff;
}

section p {
    font-size: 1.1rem;
    line-height: 1.85;
    color: rgba(255,255,255,0.75);
}

.text-center { text-align: center; align-items: center; display: flex; flex-direction: column; }

/* ── Career Timeline ── */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
    gap: 3.5rem;
}

.timeline-item {
    position: relative;
}

.timeline-dot {
    position: absolute;
    left: -2.42rem;
    top: 0.4rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    border: 2px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}

.timeline-item.current .timeline-dot {
    background: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 0 12px rgba(0, 255, 204, 0.5);
}

.timeline-date {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-color);
    font-weight: 600;
}

.timeline-item h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0.4rem 0 0.2rem;
    color: #fff;
}

.timeline-role {
    font-size: 0.9rem;
    color: rgba(255,255,255,0.45);
    margin-bottom: 0.8rem;
}

.timeline-content p {
    font-size: 1rem;
    line-height: 1.75;
}

/* ── Project Grid ── */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.8rem;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    border-radius: 16px;
    transition: all 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    cursor: pointer;
}

.glass-card:hover {
    transform: translateY(-8px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 40px rgba(0, 255, 204, 0.08);
}

.card-icon { font-size: 1.8rem; margin-bottom: 0.8rem; }

.project-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.6rem;
    color: #fff;
}

.project-card p {
    font-size: 0.92rem;
    line-height: 1.7;
}

.project-tags-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1.2rem;
}

.tag {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: rgba(255,255,255,0.65);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.75rem;
    transition: all 0.25s ease;
}

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

/* ── CTA Button ── */
.cta-button {
    display: inline-block;
    margin-top: 2rem;
    padding: 1rem 2.8rem;
    background: transparent;
    color: var(--accent-color);
    text-decoration: none;
    border: 1px solid var(--accent-color);
    border-radius: 40px;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    transition: all 0.3s ease;
}

.cta-button:hover {
    background: var(--accent-color);
    color: var(--bg-color);
    box-shadow: 0 0 30px rgba(0, 255, 204, 0.4);
    transform: translateY(-3px);
}

/* ── Section fade ── */
.section-fade {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}
.section-fade.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .nav-links { display: none; }
    section { padding: 5rem 5%; }
    .hero-overlay { right: 5%; bottom: 10%; }
    .hero-title { font-size: 1.8rem; }
}