/* ============================================
   Project Page — specific styles
   Inherits variables & utilities from style.css
   ============================================ */

/* ── Hero ───────────────────────────────────── */
#project-hero {
    background: transparent;
    padding: calc(var(--nav-h) + 60px) 0 60px;
    min-height: auto;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--text-muted);
    text-decoration: none;
    letter-spacing: 0.5px;
    margin-bottom: 48px;
    transition: var(--ease);
}
.back-link i { font-size: 0.75rem; transition: transform 0.3s ease; }
.back-link:hover { color: var(--accent); }
.back-link:hover i { transform: translateX(-4px); }

.proj-hero-inner {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 40px;
    flex-wrap: wrap;
}

.proj-category {
    font-family: var(--mono);
    font-size: 0.78rem;
    color: var(--accent);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.proj-name {
    font-family: var(--mono);
    font-size: clamp(2rem, 5vw, 3.4rem);
    font-weight: 700;
    color: var(--text);
    line-height: 1.1;
    margin-bottom: 16px;
}

.proj-tagline {
    font-size: 1.05rem;
    color: var(--text-muted);
    line-height: 1.75;
    max-width: 620px;
    margin-bottom: 28px;
}

.proj-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.proj-tag {
    font-family: var(--mono);
    font-size: 0.74rem;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--border);
    padding: 5px 14px;
    border-radius: 4px;
}

.proj-github-btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 10px 22px;
    border-radius: 4px;
    text-decoration: none;
    white-space: nowrap;
    transition: var(--ease);
    align-self: flex-start;
    margin-top: 6px;
}
.proj-github-btn:hover {
    background: var(--accent-dim);
    box-shadow: 0 0 18px var(--accent-glow);
}

/* ── Tab bar ─────────────────────────────────── */
.tab-bar {
    position: sticky;
    top: var(--nav-h);
    z-index: 100;
    background: rgba(10, 14, 26, 0.88);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    transition: box-shadow 0.3s ease;
}
.tab-bar.elevated { box-shadow: 0 2px 24px rgba(0,0,0,0.5); }

.tab-bar-inner {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 40px;
    display: flex;
    gap: 4px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--mono);
    font-size: 0.78rem;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    padding: 18px 20px;
    cursor: pointer;
    transition: color 0.3s ease, border-color 0.3s ease;
}
.tab-btn i { font-size: 0.85rem; }
.tab-btn:hover { color: var(--text); }
.tab-btn.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* ── Tab panels ──────────────────────────────── */
.tab-panel {
    display: none;
    min-height: 60vh;
}
.tab-panel.active { display: block; }

/* ── Feature timeline (Présentation) ────────── */
.feature-timeline {
    position: relative;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 80px 40px 120px 80px;
}

/* The vertical spine */
.feature-timeline::before {
    content: '';
    position: absolute;
    left: 40px;
    top: 80px;
    bottom: 120px;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--accent) 8%,
        var(--accent) 92%,
        transparent 100%
    );
}

/* ── Feature item ────────────────────────────── */
.feature-item {
    position: relative;
    margin-bottom: 100px;
}
.feature-item:last-child { margin-bottom: 0; }

.feature-dot {
    position: absolute;
    left: -55px;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--bg-dark);
    border: 1.5px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 0.62rem;
    color: var(--accent);
    box-shadow: 0 0 14px var(--accent-glow);
    z-index: 2;
}

.feature-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: center;
}

/* Every even feature: text on the left, image on the right */
.feature-item:nth-child(even) .feature-body {
    direction: rtl;
}
.feature-item:nth-child(even) .feature-body > * {
    direction: ltr;
}

/* ── Mockup frame (the "screenshot") ─────────── */
.mockup-frame {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    aspect-ratio: 16 / 10;
    display: flex;
    flex-direction: column;
    transition: border-color 0.4s ease, box-shadow 0.4s ease;
}
.feature-item:hover .mockup-frame {
    border-color: var(--accent);
    box-shadow: 0 8px 40px rgba(0, 212, 170, 0.12);
}

/* Fake window chrome */
.mockup-chrome {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    flex-shrink: 0;
}
.chrome-dot {
    width: 9px;
    height: 9px;
    border-radius: 50%;
}
.chrome-dot:nth-child(1) { background: #ff5f57; }
.chrome-dot:nth-child(2) { background: #febc2e; }
.chrome-dot:nth-child(3) { background: #28c840; }

/* Icon area */
.mockup-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
    position: relative;
    overflow: hidden;
}
.mockup-body::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, var(--accent-glow) 0%, transparent 65%);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.feature-item:hover .mockup-body::before { opacity: 1; }

.mockup-icon {
    font-size: 3rem;
    opacity: 0.25;
    transition: opacity 0.4s ease, transform 0.4s ease;
}
.feature-item:hover .mockup-icon {
    opacity: 0.7;
    transform: scale(1.1);
}

.mockup-num {
    position: absolute;
    bottom: 12px;
    right: 14px;
    font-family: var(--mono);
    font-size: 0.65rem;
    color: var(--text-dim);
    letter-spacing: 1px;
}

.mockup-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ── Feature text ────────────────────────────── */
.feature-text-wrap {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-number {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--accent);
    letter-spacing: 2px;
}

.feature-title {
    font-family: var(--mono);
    font-size: clamp(1.15rem, 2.5vw, 1.5rem);
    color: var(--text);
    font-weight: 700;
    line-height: 1.3;
}

.feature-desc {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.9;
}

/* ── Tech sheet (Fiche Technique) ────────────── */
#panel-technique {
    background: var(--bg-mid);
}

#tech-container {
    padding-top: 80px;
    padding-bottom: 120px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 56px;
}

.tech-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 24px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
.tech-card:hover {
    border-color: var(--accent);
    box-shadow: 0 4px 24px rgba(0, 212, 170, 0.1);
}

.tech-card-label {
    font-family: var(--mono);
    font-size: 0.7rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 14px;
}

.tech-card-items {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tech-item {
    font-family: var(--mono);
    font-size: 0.75rem;
    color: var(--text);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    padding: 4px 12px;
    border-radius: 3px;
}

.tech-section {
    margin-bottom: 48px;
}

.tech-section-title {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 1px;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.tech-section-title::before {
    content: '//';
    color: var(--text-dim);
    font-size: 0.78rem;
}

.tech-architecture {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.9;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 0 6px 6px 0;
    padding: 24px 28px;
}

.tech-highlights {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.highlight-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.highlight-item::before {
    content: '▸';
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 1px;
}

.tech-challenges {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.9;
    padding: 24px 28px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent2);
    border-radius: 0 6px 6px 0;
}

.tech-cta {
    display: flex;
    justify-content: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    margin-top: 56px;
}

.tech-github-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 13px 30px;
    border-radius: 4px;
    text-decoration: none;
    transition: var(--ease);
}
.tech-github-btn:hover {
    background: var(--accent-dim);
    box-shadow: 0 0 22px var(--accent-glow);
    transform: translateY(-2px);
}

/* ── Responsive ──────────────────────────────── */
@media (max-width: 900px) {
    .feature-body {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    /* Reset rtl trick on mobile */
    .feature-item:nth-child(even) .feature-body {
        direction: ltr;
    }

    .feature-timeline {
        padding: 60px 24px 80px 60px;
    }

    .feature-timeline::before {
        left: 24px;
    }

    .feature-dot {
        left: -40px;
    }

    .proj-hero-inner {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .tab-bar-inner {
        padding: 0 24px;
    }

    .tab-btn span { display: none; }
    .tab-btn { padding: 16px 18px; }
    .tab-btn i { font-size: 1.1rem; }

    .feature-timeline {
        padding: 48px 18px 80px 52px;
    }

    .feature-timeline::before { left: 16px; }
    .feature-dot { left: -36px; }

    .tech-grid { grid-template-columns: 1fr 1fr; }

    #tech-container { padding-top: 48px; padding-bottom: 80px; }
}

@media (max-width: 480px) {
    .tech-grid { grid-template-columns: 1fr; }

    .proj-name { font-size: 2rem; }

    .feature-item { margin-bottom: 64px; }
}