/* ============================
   WORK.CSS — Work / Portfolio Page
   ============================ */

/* ===== PAGE HERO (shared with about.css pattern) ===== */
.page-hero {
    min-height: 42vh;
    display: flex;
    align-items: flex-end;
    padding: calc(var(--nav-height) + 4rem) 5% 4rem;
    position: relative;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--glass-border);
}

.page-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 70% 60%, rgba(118, 75, 162, 0.07) 0%, transparent 60%);
    pointer-events: none;
}

.page-hero-inner {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.page-hero-sub {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 520px;
    line-height: 1.7;
}

/* ===== FILTER BAR ===== */
.filter-bar {
    background: var(--bg-primary);
    padding: 2rem 5%;
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: var(--nav-height);
    z-index: 100;
    backdrop-filter: blur(20px);
}

.filter-inner {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.4rem;
    border-radius: 50px;
    border: 1.5px solid var(--glass-border);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    transition: all 0.25s ease;
    cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: white;
    box-shadow: var(--shadow-glow-blue);
}

/* ===== PROJECTS SECTION ===== */
.projects-section {
    background: var(--bg-primary);
}

.projects-inner {
    max-width: 1400px;
    margin: 0 auto;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 1.5rem;
}

/* ===== PROJECT CARD ===== */
.project-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    transition: border-color 0.3s ease, transform 0.35s ease, box-shadow 0.35s ease;
    overflow: hidden;
    --mx: 50%;
    --my: 50%;
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--mx) var(--my), rgba(102, 126, 234, 0.09) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s;
    pointer-events: none;
}

.project-card:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.project-card:hover::before {
    opacity: 1;
}

/* Hidden cards (filtered out) */
.project-card.hidden {
    display: none;
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.project-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.project-links {
    display: flex;
    gap: 0.5rem;
}

.project-link-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.8rem;
    transition: all 0.25s ease;
}

.project-link-btn:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
    background: rgba(0, 242, 254, 0.08);
}

.project-title {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.75;
    flex: 1;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.project-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1rem;
    border-top: 1px solid var(--glass-border);
    margin-top: auto;
}

.project-year {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.04em;
}

.project-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    color: var(--accent-cyan);
    transition: gap 0.25s ease;
}

.project-cta:hover {
    gap: 0.7rem;
}

/* ===== CTA BAND (Simple) ===== */
.cta-band-simple {
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: 5rem 5%;
    text-align: center;
}

.cta-band-simple-inner {
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.cta-band-simple h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    line-height: 1.15;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
    }

    .filter-inner {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.4rem 1rem;
        font-size: 0.8rem;
    }
}

.cta-band-simple-reveal {
    background: var(--bg-secondary);
    border-top: 1px solid var(--glass-border);
    padding: 5rem 5%;
    text-align: center;
}