/* ============================================================
   Shared styles for book detail pages
   (olaboga.html, pierwszy-urok.html, spadek.html)
   ============================================================ */

* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --primary-color: #2c2c2c;
    --accent-pink: #f3cbd3;
    --accent-gold: #d4af37;
    --bg-light: #fbfbfb;
    --text-muted: #666666;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Montserrat', sans-serif;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-light);
    color: var(--primary-color);
    line-height: 1.7;
    padding-top: 110px;
}

/* ---- Header ---- */
header {
    position: fixed;
    top: 0; left: 0; width: 100%;
    background-color: rgba(253, 253, 253, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--primary-color);
}

.back-btn {
    text-decoration: none;
    color: var(--primary-color);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color 0.3s;
}

.back-btn:hover { color: var(--accent-gold); }

/* ---- Main content layout ---- */
.container { max-width: 1100px; margin: 0 auto; padding: 40px 20px; }

.book-grid {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: 60px;
    align-items: start;
    margin-bottom: 60px;
}

/* ---- 3D Book on detail page ---- */
.book-view { perspective: 1500px; width: 260px; height: 395px; margin: 0 auto; }

.book-3d {
    width: 100%; height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateY(-22deg) rotateX(4deg);
    box-shadow: 15px 20px 35px rgba(0,0,0,0.15);
}

.book-front {
    position: absolute;
    width: 100%; height: 100%;
    z-index: 2;
    transform: translateZ(12px);
}

.book-front img {
    width: 100%; height: 100%;
    object-fit: cover;
    border-radius: 1px 4px 4px 1px;
}

.book-front::after {
    content: '';
    position: absolute; top: 0; left: 0; width: 6px; height: 100%;
    background: linear-gradient(90deg, rgba(0,0,0,0.12) 0%, rgba(255,255,255,0) 100%);
}

.book-3d::before {
    content: '';
    position: absolute; left: 0; top: 0; width: 100%; height: 32px;
    background: linear-gradient(0deg, #c4bfb7 0%, #ede8dc 100%);
    transform-origin: top center;
    transform: translateZ(12px) rotateX(-90deg);
    z-index: 1;
}

.book-3d::after {
    content: '';
    position: absolute; top: 0; height: 100%; width: 32px;
    left: 100%;
    background: linear-gradient(90deg, #c4bfb7 0%, #ede8dc 100%);
    transform-origin: left center;
    transform: translateZ(12px) rotateY(90deg);
    z-index: 1;
}

/* ---- Book info ---- */
.book-info h1 {
    font-family: var(--font-serif);
    font-size: 2.8rem;
    margin-bottom: 5px;
    line-height: 1.2;
}

.tag {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-muted);
    margin-bottom: 25px;
    display: inline-block;
    border-bottom: 2px solid var(--accent-pink);
    padding-bottom: 4px;
}

.desc-text {
    font-size: 1.05rem;
    color: #333;
    margin-bottom: 40px;
    text-align: justify;
}

/* ---- Buy buttons ---- */
.buy-box h3 {
    font-family: var(--font-serif);
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.buy-buttons { display: flex; gap: 15px; flex-wrap: wrap; }

.btn-shop {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.btn-shop:hover { background: var(--primary-color); color: #fff; }

/* ---- Purchase options ---- */
.purchase-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-bottom: 80px;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 4px;
}

.purchase-option h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.purchase-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.btn-purchase {
    display: inline-block;
    padding: 11px 20px;
    background: transparent;
    border: 1px solid var(--accent-pink);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    text-align: center;
    transition: all 0.3s;
    border-radius: 2px;
}

.btn-purchase:hover {
    background: var(--accent-pink);
    color: var(--primary-color);
}

/* ---- Audiobook sample ---- */
.audiobook-sample {
    padding: 80px 20px;
    background-color: #fafafa;
    max-width: 1200px;
    margin: 0 auto;
}

.audiobook-sample h2 {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
    color: var(--primary-color);
}

.video-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-radius: 4px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0,0,0,0.05);
}

.video-container iframe {
    display: block;
    border: none;
}

/* ---- Reviews ---- */
.reviews-section { background-color: #f4f4f4; padding: 80px 20px; width: 100%; }

.reviews-title {
    font-family: var(--font-serif);
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.review-card {
    background: #fff;
    padding: 30px;
    border-radius: 4px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.02);
}

.stars { color: var(--accent-gold); margin-bottom: 10px; font-size: 0.9rem; }
.review-text { font-style: italic; color: #555; font-size: 0.95rem; }

/* ---- Footer ---- */
footer {
    background-color: #1a1a1a;
    color: #ffffff;
    padding: 40px 20px;
    text-align: center;
    font-size: 0.9rem;
    margin-top: 60px;
}

/* ---- Responsive ---- */
@media (max-width: 800px) {
    .book-grid { grid-template-columns: 1fr; gap: 40px; }
    body { padding-top: 140px; }
}