/* ================= PROJECTS PAGE ================= */

/* Page Hero */
.page-hero {
    min-height: 38vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 60%, var(--neutral) 100%);
    position: relative;
    overflow: hidden;
}

.hero-grid-bg {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(212,165,116,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212,165,116,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 70% 40%, rgba(212,165,116,0.08) 0%, transparent 55%);
    pointer-events: none;
}

.page-hero-content {
    position: relative;
    z-index: 1;
}

.page-hero-eyebrow {
    font-size: 0.85rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.page-hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    color: var(--text-light);
    margin-bottom: 1rem;
    animation: fadeInUp 0.8s ease both;
}

.page-hero-sub {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text);
    max-width: 600px;
    margin: 0 auto;
    animation: fadeInUp 0.8s ease 0.15s both;
}

/* ================= TAB BAR ================= */
.projects-section {
    background: var(--primary);
    padding-bottom: 5rem;
}

.tab-bar {
    display: flex;
    gap: 0.5rem;
    margin: 3rem 0 2.5rem;
    background: var(--secondary);
    padding: 0.4rem;
    border-radius: 12px;
    width: fit-content;
    border: 1px solid var(--neutral);
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 1.6rem;
    background: transparent;
    border: none;
    color: var(--text);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 9px;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: inherit;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-light);
    background: rgba(212,165,116,0.08);
}

.tab-btn.active {
    background: var(--accent);
    color: var(--primary);
    box-shadow: 0 2px 12px rgba(212,165,116,0.35);
}

.tab-count {
    background: rgba(0,0,0,0.15);
    padding: 0.1rem 0.5rem;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: 700;
}

.tab-btn.active .tab-count {
    background: rgba(10,26,47,0.2);
}

/* ================= TAB CONTENT ================= */
.tab-content {
    display: none;
    animation: fadeInUp 0.4s ease both;
}

.tab-content.active {
    display: block;
}

/* ================= PROJECT CARDS ================= */
.projects-grid-full {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1.8rem;
}

.proj-card {
    position: relative;
    background: var(--bg-light);
    border-radius: 12px;
    border: 1px solid var(--neutral);
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    display: block;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
}

.proj-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 40px rgba(212,165,116,0.18);
    border-color: rgba(212,165,116,0.4);
}

.proj-card-accent {
    height: 3px;
    background: linear-gradient(90deg, var(--accent), transparent);
    transition: opacity 0.3s;
    opacity: 0;
}

.proj-card:hover .proj-card-accent {
    opacity: 1;
}

.proj-card-inner {
    padding: 1.8rem;
}

.proj-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.9rem;
}

.proj-domain {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 0.25rem 0.7rem;
    border-radius: 20px;
}

.proj-domain.hw  { background: rgba(212,165,116,0.15); color: var(--accent); }
.proj-domain.sim { background: rgba(100,160,255,0.15); color: #6aa0ff; }
.proj-domain.sw  { background: rgba(100,220,150,0.15); color: #64dc96; }

.proj-year {
    font-size: 0.78rem;
    color: var(--text);
}

.proj-card-inner h3 {
    font-size: 1.15rem;
    color: var(--text-light);
    margin-bottom: 0.65rem;
    line-height: 1.35;
}

.proj-card-inner p {
    font-size: 0.92rem;
    color: var(--text);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.proj-stats {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.stat {
    font-size: 0.8rem;
    color: var(--text);
    background: var(--neutral);
    padding: 0.25rem 0.65rem;
    border-radius: 5px;
}

.stat strong {
    color: var(--accent);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 1.2rem;
}

.tech-tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    background: var(--secondary);
    border: 1px solid var(--neutral);
    border-radius: 4px;
    color: var(--text);
}

.proj-arrow {
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    opacity: 0;
    transform: translateX(-6px);
    transition: opacity 0.25s, transform 0.25s;
}

.proj-card:hover .proj-arrow {
    opacity: 1;
    transform: translateX(0);
}

/* Placeholder card */
.proj-card-placeholder {
    border-style: dashed;
    border-color: var(--neutral);
    cursor: default;
}

.proj-card-placeholder:hover {
    transform: none;
    box-shadow: none;
    border-color: rgba(212,165,116,0.25);
}

.placeholder-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 260px;
    padding: 2.5rem;
}

.placeholder-icon {
    font-size: 2.5rem;
    color: var(--neutral);
    margin-bottom: 1rem;
    line-height: 1;
}

.placeholder-inner h3 {
    color: var(--text) !important;
    margin-bottom: 0.5rem;
}

/* ================= PROJECT DETAIL PAGE ================= */
.project-detail-hero {
    padding: 7rem 2rem 4rem;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 70%);
    position: relative;
    overflow: hidden;
}

.project-detail-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(212,165,116,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212,165,116,0.03) 1px, transparent 1px);
    background-size: 48px 48px;
    pointer-events: none;
}

.project-detail-hero .container {
    padding-top: 0;
    padding-bottom: 0;
    position: relative;
    z-index: 1;
}

.project-breadcrumb {
    font-size: 0.85rem;
    color: var(--text);
    margin-bottom: 1.5rem;
}

.project-breadcrumb a {
    color: var(--accent);
    text-decoration: none;
}

.project-breadcrumb a:hover { text-decoration: underline; }

.project-detail-hero h1 {
    font-size: clamp(1.8rem, 4vw, 3rem);
    color: var(--text-light);
    line-height: 1.25;
    margin-bottom: 1rem;
    max-width: 800px;
}

.project-detail-hero .hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
}

.project-detail-hero .hero-desc {
    font-size: 1.1rem;
    color: var(--text);
    max-width: 700px;
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.project-detail-hero .tech-tags {
    margin-bottom: 0;
}

/* Detail content */
.project-detail-body {
    background: var(--primary);
}

.detail-grid {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 3rem;
    align-items: start;
}

.detail-main section {
    margin-bottom: 3rem;
}

.detail-main h2 {
    font-size: 1.4rem;
    color: var(--accent);
    margin-bottom: 1.2rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--neutral);
}

.detail-main p {
    color: var(--text);
    line-height: 1.8;
    margin-bottom: 1rem;
}

.detail-main ul {
    padding-left: 1.2rem;
    color: var(--text);
    line-height: 1.8;
}

.detail-main ul li {
    margin-bottom: 0.4rem;
}

/* Sidebar */
.detail-sidebar {
    position: sticky;
    top: calc(8vh + 2rem);
}

.sidebar-card {
    background: var(--bg-light);
    border: 1px solid var(--neutral);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.sidebar-card h4 {
    font-size: 0.8rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
    font-weight: 700;
}

.sidebar-card p,
.sidebar-card span {
    font-size: 0.9rem;
    color: var(--text);
    line-height: 1.6;
}

.sidebar-stat {
    display: flex;
    flex-direction: column;
    margin-bottom: 0.9rem;
}

.sidebar-stat strong {
    color: var(--text-light);
    font-size: 1.3rem;
}

.sidebar-stat span {
    font-size: 0.8rem;
    color: var(--text);
}

/* Results highlight boxes */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.result-box {
    background: var(--bg-light);
    border: 1px solid var(--neutral);
    border-radius: 10px;
    padding: 1.2rem;
    text-align: center;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.result-box:hover {
    border-color: rgba(212,165,116,0.4);
    box-shadow: 0 4px 15px rgba(212,165,116,0.1);
}

.result-box .result-val {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
    line-height: 1;
    margin-bottom: 0.4rem;
}

.result-box .result-label {
    font-size: 0.8rem;
    color: var(--text);
}

/* Media placeholder */
.media-placeholder {
    background: var(--secondary);
    border: 2px dashed var(--neutral);
    border-radius: 10px;
    padding: 3rem 2rem;
    text-align: center;
    color: var(--text);
    font-size: 0.9rem;
    margin: 1.5rem 0;
}

.media-placeholder .media-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.75rem;
    opacity: 0.4;
}

/* Back link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 3rem;
    text-decoration: none;
    transition: gap 0.2s;
}

.back-link:hover { gap: 0.8rem; }

/* ================= RESPONSIVE ================= */
@media (max-width: 900px) {
    .detail-grid {
        grid-template-columns: 1fr;
    }
    .detail-sidebar {
        position: static;
    }
}

@media (max-width: 640px) {
    .tab-bar {
        width: 100%;
        justify-content: stretch;
    }
    .tab-btn {
        flex: 1;
        padding: 0.65rem 0.75rem;
        font-size: 0.82rem;
        justify-content: center;
    }
    .tab-icon { display: none; }
    .projects-grid-full {
        grid-template-columns: 1fr;
    }
}