:root {
    --surface-1: #0f0f0f;
    --surface-2: #161616;
    --surface-3: #1e1e1e;
    --border-subtle: #2a2a2a;
    --accent: #0d6efd;
    --accent-green: #198754;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--surface-1);
    color: #e0e0e0;
}

/* ── Navbar ── */
.navbar {
    background-color: rgba(15, 15, 15, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-subtle) !important;
    position: sticky;
    top: 0;
    z-index: 1030;
}

.navbar-brand {
    letter-spacing: 0.12em;
    color: #fff !important;
}

.nav-link {
    color: #adb5bd !important;
    transition: color 0.2s;
}

.nav-link:hover {
    color: #fff !important;
}

/* ── Hero ── */
.hero-section {
    padding: 100px 0 80px;
    background: radial-gradient(ellipse at 50% 0%, rgba(13, 110, 253, 0.12) 0%, transparent 65%), var(--surface-1);
}

.hero-eyebrow {
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
}

/* ── Section headings ── */
.section-label {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #6c757d;
    font-weight: 600;
}

/* ── Project cards ── */
.project-card {
    background-color: var(--surface-2);
    border: 1px solid var(--border-subtle) !important;
    transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent) !important;
    box-shadow: 0 8px 32px rgba(13, 110, 253, 0.15);
}

.project-card .card-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

/* ── About ── */
.about-section {
    background-color: var(--surface-2);
    border-top: 1px solid var(--border-subtle);
    border-bottom: 1px solid var(--border-subtle);
}

/* ── Footer ── */
footer {
    background-color: var(--surface-1);
    border-top: 1px solid var(--border-subtle) !important;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border-subtle);
    color: #adb5bd;
    font-size: 1.15rem;
    text-decoration: none;
    transition: color 0.2s, border-color 0.2s, background-color 0.2s;
}

.social-link:hover {
    color: #fff;
    border-color: #fff;
    background-color: rgba(255, 255, 255, 0.06);
}

/* ── Misc ── */
.divider {
    border-color: var(--border-subtle);
}