/*
  Project Detail Page Styles
  Extends the base style.css with project-specific layouts
*/

/* --- Project Hero --- */
.project-hero {
    padding: 10rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.project-hero-content {
    max-width: 720px;
}

.project-back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 2rem;
    transition: color 0.3s ease;
}

.project-back-link:hover {
    color: var(--text-main);
}

.project-tag {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 100px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.project-hero-title {
    font-size: clamp(2.8rem, 6vw, 4.5rem);
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.project-hero-meta {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-family: monospace;
    margin-bottom: 1.5rem;
}

.project-hero-desc {
    font-size: 1.15rem;
    line-height: 1.8;
    color: #444;
    max-width: 640px;
}

/* --- Project Layout (Sidebar + Content) --- */
.project-layout {
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 6rem;
    gap: 4rem;
    position: relative;
}

/* --- Sidebar --- */
.project-sidebar {
    width: 200px;
    flex-shrink: 0;
    position: sticky;
    top: 120px;
    height: fit-content;
    align-self: flex-start;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.6rem 0;
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.sidebar-link:hover {
    color: var(--text-main);
}

.sidebar-link.active {
    color: var(--text-main);
    font-weight: 600;
}

.sidebar-indicator {
    display: block;
    width: 2px;
    height: 20px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 2px;
    transition: background 0.3s ease, height 0.3s ease;
}

.sidebar-link.active .sidebar-indicator {
    background: var(--text-main);
    height: 24px;
}

/* --- Main Content --- */
.project-content {
    flex: 1;
    min-width: 0;
}

.content-section {
    margin-bottom: 6rem;
    position: relative;
}

.section-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.15);
    font-family: monospace;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
}

.content-title {
    font-size: 2rem;
    letter-spacing: -0.02em;
    margin-bottom: 2rem;
    color: var(--text-main);
}

.content-body p {
    font-size: 1.05rem;
    line-height: 1.85;
    color: #333;
    margin-bottom: 1.5rem;
}

.content-subtitle {
    font-size: 1.2rem;
    font-weight: 600;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

/* --- Image Placeholders --- */
.image-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: linear-gradient(135deg, rgba(0,0,0,0.02) 0%, rgba(0,0,0,0.04) 100%);
    border: 1px dashed rgba(0, 0, 0, 0.1);
    border-radius: 16px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 500;
    margin: 2rem 0;
    transition: background 0.3s ease, border-color 0.3s ease;
}

.image-placeholder:hover {
    background: linear-gradient(135deg, rgba(0,0,0,0.03) 0%, rgba(0,0,0,0.06) 100%);
    border-color: rgba(0, 0, 0, 0.18);
}

.placeholder-icon {
    opacity: 0.25;
}

.image-placeholder.large {
    height: 320px;
}

.image-placeholder.xlarge {
    height: 420px;
}

.image-placeholder.medium {
    height: 260px;
}

/* --- Image Group (Side by Side) --- */
.image-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.image-group .image-placeholder {
    margin: 0;
}

/* --- Highlight Cards (Stats) --- */
.highlight-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2.5rem 0;
}

.highlight-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    text-align: center;
    box-shadow: var(--glass-shadow);
}

.highlight-number {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-main);
    margin-bottom: 0.5rem;
}

.highlight-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* --- Strategy Flow --- */
.strategy-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    margin: 3rem 0;
    flex-wrap: wrap;
}

.strategy-node {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 1.5rem 1.8rem;
    text-align: center;
    box-shadow: var(--glass-shadow);
    min-width: 140px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.strategy-node:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.node-icon {
    font-size: 1.8rem;
    margin-bottom: 0.6rem;
}

.node-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.3rem;
}

.node-desc {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.strategy-arrow {
    font-size: 1.5rem;
    color: rgba(0, 0, 0, 0.15);
    padding: 0 0.8rem;
    font-weight: 300;
}

/* --- Feature List --- */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    margin: 2rem 0;
}

.feature-item {
    display: flex;
    gap: 1.2rem;
    align-items: flex-start;
    padding: 1.5rem;
    background: rgba(0, 0, 0, 0.015);
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.04);
    transition: background 0.3s ease, transform 0.3s ease;
}

.feature-item:hover {
    background: rgba(0, 0, 0, 0.03);
    transform: translateX(4px);
}

.feature-icon {
    font-size: 1.6rem;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.feature-text strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 0.4rem;
    color: var(--text-main);
}

.feature-text p {
    font-size: 0.92rem !important;
    line-height: 1.6 !important;
    color: #666 !important;
    margin-bottom: 0 !important;
}

/* --- Prototype Showcase --- */
.prototype-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.prototype-screen {
    height: 280px;
    margin: 0;
    border-radius: 12px;
}

.mobile-showcase {
    grid-template-columns: repeat(4, 1fr);
}

.prototype-mobile {
    height: 380px;
    margin: 0;
    border-radius: 24px;
    max-width: 200px;
}

/* --- Result Cards --- */
.result-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin: 2rem 0;
}

.result-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem 1.5rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.result-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
}

.result-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.result-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 0.8rem;
}

.result-card p {
    font-size: 0.88rem !important;
    line-height: 1.6 !important;
    color: #666 !important;
    margin-bottom: 0 !important;
}

/* --- Bottom Navigation --- */
.project-bottom-nav {
    padding: 3rem 0;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    margin-top: 2rem;
}

.bottom-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.bottom-nav-link:hover {
    color: var(--text-main);
}

/* --- "View Project" Button in Main Page --- */
.project-detail-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    padding: 0.5rem 0;
    margin-right: 1rem;
    padding-bottom: 2px;
    border-bottom: 1px solid var(--text-main);
    transition: all 0.3s ease;
}

.project-detail-btn:hover {
    color: var(--text-muted);
    border-color: var(--text-muted);
}

.project-detail-btn svg {
    transition: transform 0.3s ease;
}

.project-detail-btn:hover svg {
    transform: translateX(3px);
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .project-layout {
        flex-direction: column;
        gap: 0;
    }

    .project-sidebar {
        position: relative;
        top: 0;
        width: 100%;
        padding-bottom: 2rem;
        border-bottom: 1px solid rgba(0, 0, 0, 0.06);
        margin-bottom: 3rem;
    }

    .sidebar-nav {
        flex-direction: row;
        overflow-x: auto;
        gap: 0;
        -webkit-overflow-scrolling: touch;
    }

    .sidebar-link {
        white-space: nowrap;
        padding: 0.6rem 1rem;
    }

    .sidebar-indicator {
        display: none;
    }

    .sidebar-link.active {
        border-bottom: 2px solid var(--text-main);
    }

    .image-group {
        grid-template-columns: 1fr;
    }

    .highlight-cards,
    .result-cards {
        grid-template-columns: 1fr;
    }

    .prototype-showcase {
        grid-template-columns: 1fr 1fr;
    }

    .mobile-showcase {
        grid-template-columns: repeat(2, 1fr);
    }

    .strategy-flow {
        flex-direction: column;
        gap: 0.5rem;
    }

    .strategy-arrow {
        transform: rotate(90deg);
        padding: 0.3rem 0;
    }
}

@media (max-width: 480px) {
    .project-hero {
        padding-top: 7rem;
    }

    .prototype-showcase,
    .mobile-showcase {
        grid-template-columns: 1fr;
    }

    .prototype-mobile {
        max-width: 100%;
    }
}