/* ============================================================
   portfolio.css — Portfolio Section Styles
   ============================================================ */

#portfolio-section {
    min-height: 100vh;
    background: var(--color-void);
    padding-top: calc(var(--header-h) + 3rem);
    display: none;
}
#portfolio-section.active { display: block; }

/* ---- Hero ---- */
.portfolio-hero {
    text-align: center;
    padding: 4rem 1.5rem 5rem;
    position: relative;
}
.portfolio-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(100,255,218,0.06) 0%, transparent 70%);
    pointer-events: none;
}
.hero-eyebrow {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-aurora);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    color: var(--color-star);
    margin-bottom: 1rem;
    line-height: 1.1;
}
.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-stardust);
    max-width: 550px;
    margin: 0 auto 2.5rem;
}
.hero-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ---- Filter Bar ---- */
.filter-bar {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    padding: 0 1.5rem;
}
.filter-btn {
    padding: 0.45rem 1.1rem;
    border: 1px solid rgba(100,255,218,0.2);
    border-radius: 100px;
    background: transparent;
    color: var(--color-stardust);
    font-family: var(--font-primary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}
.filter-btn:hover,
.filter-btn.active {
    background: rgba(100, 255, 218, 0.1);
    border-color: var(--color-aurora);
    color: var(--color-aurora);
}

/* ---- Portfolio Grid ---- */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ---- Project Card ---- */
.project-card {
    position: relative;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: transform var(--transition-med);
}
.project-card:hover { transform: translateY(-6px); }

.card-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: var(--color-nebula);
    display: block;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}
.card-thumbnail-placeholder {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--color-nebula), var(--color-cosmos));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: rgba(100,255,218,0.2);
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.card-body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.card-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}
.card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-star);
    line-height: 1.3;
}
.card-featured {
    color: var(--color-gold);
    font-size: 0.9rem;
    flex-shrink: 0;
}
.card-category {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 0.6rem;
    border: 1px solid;
}
.cat-web_app   { color: var(--color-aurora);   border-color: var(--color-aurora);   background: rgba(100,255,218,0.08); }
.cat-novel     { color: var(--color-plasma);   border-color: var(--color-plasma);   background: rgba(123,47,255,0.08); }
.cat-book      { color: var(--color-gold);     border-color: var(--color-gold);     background: rgba(255,215,0,0.08); }
.cat-simulation{ color: #00cfff;               border-color: #00cfff;               background: rgba(0,207,255,0.08); }
.cat-game      { color: var(--color-supernova);border-color: var(--color-supernova);background: rgba(255,107,53,0.08); }
.cat-other     { color: var(--color-stardust); border-color: var(--color-stardust); background: rgba(168,178,216,0.08); }

.card-desc {
    font-size: 0.88rem;
    color: var(--color-stardust);
    line-height: 1.6;
    flex: 1;
    margin-bottom: 0.8rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}
.card-tag {
    padding: 0.15rem 0.5rem;
    border-radius: var(--radius-sm);
    background: rgba(255,255,255,0.05);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: rgba(168,178,216,0.8);
    border: 1px solid rgba(255,255,255,0.08);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-top: auto;
}

/* ---- Empty State ---- */
.portfolio-empty {
    text-align: center;
    padding: 5rem 1rem;
    color: var(--color-stardust);
    grid-column: 1 / -1;
}
.portfolio-empty .empty-icon { font-size: 3rem; margin-bottom: 1rem; }

/* ---- About Section ---- */
#about-section { padding: 6rem 0; background: var(--color-cosmos); }
.about-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 3rem;
    align-items: start;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 1.5rem;
}
.about-avatar {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--color-aurora);
    box-shadow: 0 0 30px rgba(100,255,218,0.2);
}
.about-avatar-placeholder {
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: var(--color-nebula);
    border: 3px solid var(--color-aurora);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    box-shadow: 0 0 30px rgba(100,255,218,0.2);
}
.about-name {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-star);
    margin-bottom: 0.25rem;
}
.about-profession { color: var(--color-aurora); font-weight: 500; margin-bottom: 1rem; }
.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 1.5rem 0;
}
.skill-tag {
    padding: 0.3rem 0.8rem;
    border-radius: var(--radius-sm);
    background: rgba(100,255,218,0.08);
    border: 1px solid rgba(100,255,218,0.2);
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-aurora);
}
.social-links { display: flex; gap: 1rem; }
.social-link { color: var(--color-stardust); font-size: 0.9rem; }
.social-link:hover { color: var(--color-aurora); }

/* ---- Stats Row ---- */
.stats-row {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
    padding: 3rem 1.5rem;
    background: var(--color-nebula);
    border-top: 1px solid rgba(100,255,218,0.06);
    border-bottom: 1px solid rgba(100,255,218,0.06);
}
.stat-item { text-align: center; }
.stat-num {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-aurora);
    display: block;
}
.stat-label { font-size: 0.85rem; color: var(--color-stardust); }

/* ---- Modal ---- */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0,0,5,0.85);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
    backdrop-filter: blur(4px);
}
.modal-backdrop.open { opacity: 1; pointer-events: all; }
.modal {
    background: var(--color-nebula);
    border: 1px solid rgba(100,255,218,0.15);
    border-radius: var(--radius-lg);
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform var(--transition-fast);
}
.modal-backdrop.open .modal { transform: scale(1); }
.modal-header {
    padding: 1.5rem 1.5rem 0;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.modal-close {
    background: none;
    border: none;
    color: var(--color-stardust);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    padding: 0 0.5rem;
    transition: color var(--transition-fast);
}
.modal-close:hover { color: var(--color-star); }
.modal-body { padding: 1.5rem; }

/* Responsive */
@media (max-width: 900px) {
    .about-grid { grid-template-columns: 1fr; text-align: center; }
    .social-links { justify-content: center; }
    .skills-grid { justify-content: center; }
}
@media (max-width: 600px) {
    .portfolio-grid { grid-template-columns: 1fr; }
    .filter-bar { gap: 0.4rem; }
    .filter-btn { font-size: 0.78rem; padding: 0.35rem 0.8rem; }
}