/* ─── VARIABLES ─── */
:root {
    --bg:         #0b0b0b;
    --bg-alt:     #101010;
    --bg-card:    #161616;
    --text:       #f0ede8;
    --muted:      #6e6b65;
    --accent:     #c5a46a;
    --accent-h:   #d4b87a;
    --border:     rgba(255,255,255,0.07);
    --ff-d:       'Playfair Display', Georgia, serif;
    --ff-b:       'DM Sans', system-ui, sans-serif;
}

/* ─── RESET ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--ff-b);
    font-weight: 300;
    font-size: 16px;
    line-height: 1.75;
    overflow-x: hidden;
}

/* ─── NAVBAR ─── */
.site-nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 999;
    padding: 28px 0;
    transition: padding .4s ease, background .4s ease, border-color .4s ease;
    border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
    background: rgba(11,11,11,0.94);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    padding: 18px 0;
    border-bottom-color: var(--border);
}
.nav-brand {
    font-family: var(--ff-d);
    font-size: 1.1rem;
    letter-spacing: .03em;
    color: var(--text);
    text-decoration: none;
}
.nav-brand em { font-style: normal; color: var(--accent); }
.nav-links a {
    color: var(--muted);
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    text-decoration: none;
    margin-left: 2.5rem;
    transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

/* ─── HERO ─── */
.hero {
    position: relative;
    height: 100vh;
    min-height: 720px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
}
.hero-bg {
    position: absolute;
    inset: -25% 0;
    background: url('../img/herobg.png') center/cover no-repeat;
    will-change: transform;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom,
        rgba(11,11,11,.25) 0%,
        rgba(11,11,11,.55) 45%,
        rgba(11,11,11,.90) 100%);
}
.hero-content { position: relative; z-index: 2; }
.hero-eyebrow {
    font-size: .68rem;
    letter-spacing: .35em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1.4rem;
}
.hero-title {
    font-family: var(--ff-d);
    font-size: clamp(3.2rem, 9vw, 8.5rem);
    font-weight: 400;
    line-height: .98;
    letter-spacing: -.01em;
    margin-bottom: .35em;
}
.hero-title em { font-style: italic; color: var(--accent); }
.hero-sub {
    font-size: clamp(.8rem, 1.4vw, 1rem);
    color: rgba(240,237,232,.55);
    letter-spacing: .18em;
    text-transform: uppercase;
    margin-bottom: 3rem;
}
.hero-scroll {
    position: absolute;
    bottom: 2.5rem; left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .5rem;
    color: var(--muted);
    font-size: .65rem;
    letter-spacing: .22em;
    text-transform: uppercase;
    z-index: 2;
}
.scroll-line {
    width: 1px; height: 52px;
    background: linear-gradient(to bottom, var(--accent), transparent);
    animation: lineAnim 2s ease-in-out infinite;
}
@keyframes lineAnim {
    0%   { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50%  { opacity: 1; }
    100% { opacity: 0; transform: scaleY(1); transform-origin: bottom; }
}

/* ─── BUTTONS ─── */
.btn-gold {
    display: inline-block;
    padding: 15px 42px;
    background: var(--accent);
    color: #0b0b0b;
    font-family: var(--ff-b);
    font-size: .75rem;
    font-weight: 500;
    letter-spacing: .16em;
    text-transform: uppercase;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: background .25s, transform .2s;
}
.btn-gold:hover { background: var(--accent-h); transform: translateY(-1px); color: #0b0b0b; }
.btn-ghost {
    display: inline-block;
    padding: 14px 40px;
    background: transparent;
    color: var(--text);
    font-family: var(--ff-b);
    font-size: .75rem;
    font-weight: 300;
    letter-spacing: .16em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid rgba(240,237,232,.22);
    cursor: pointer;
    transition: border-color .25s, color .25s;
}
.btn-ghost:hover { border-color: var(--text); color: var(--text); }

/* ─── SECTION UTILS ─── */
.section     { padding: 130px 0; }
.section-alt { background: var(--bg-alt); }
.eyebrow {
    font-size: .68rem;
    letter-spacing: .32em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 1rem;
}
.s-title {
    font-family: var(--ff-d);
    font-size: clamp(2rem, 5vw, 3.8rem);
    font-weight: 400;
    line-height: 1.08;
}
.s-title em { font-style: italic; color: var(--accent); }
.divider {
    width: 44px; height: 1px;
    background: var(--accent);
    margin: 1.8rem auto;
}
.divider-l { margin-left: 0; }

/* ─── MANIFESTO ─── */
.manifesto { text-align: center; max-width: 760px; margin: 0 auto; }
.m-quote {
    font-family: var(--ff-d);
    font-size: clamp(1.35rem, 2.8vw, 2.1rem);
    font-weight: 400;
    font-style: italic;
    line-height: 1.55;
}
.m-quote::before { content: '\201C'; color: var(--accent); }
.m-quote::after  { content: '\201D'; color: var(--accent); }
.m-sub {
    margin-top: 1.5rem;
    color: var(--muted);
    font-size: .85rem;
    letter-spacing: .08em;
}

/* ─── BOOK ─── */
.book-frame {
    position: relative;
    max-width: 400px;
}
.book-frame::before {
    content: '';
    position: absolute;
    top: 18px; left: 18px;
    right: -10px; bottom: -10px;
    border: 1px solid rgba(197,164,106,.18);
    z-index: 0;
}
.book-cover {
    position: relative;
    z-index: 1;
    width: 100%;
    display: block;
    transform: perspective(900px) rotateY(-6deg);
    transition: transform .6s ease;
    box-shadow:
        24px 24px 60px rgba(0,0,0,.7),
        0 0 0 1px rgba(255,255,255,.06);
}
.book-frame:hover .book-cover {
    transform: perspective(900px) rotateY(-2deg);
}
.book-vol {
    font-size: .68rem;
    letter-spacing: .32em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: .9rem;
}
.book-title {
    font-family: var(--ff-d);
    font-size: clamp(1.9rem, 4vw, 3rem);
    font-weight: 400;
    line-height: 1.12;
    margin-bottom: 1.4rem;
}
.book-title em { font-style: italic; color: var(--accent); }
.book-desc {
    color: var(--muted);
    font-size: .92rem;
    line-height: 1.9;
    margin-bottom: 2rem;
}
.specs {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-bottom: 2.5rem;
}
.spec-lbl {
    display: block;
    font-size: .62rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .2rem;
}
.spec-val { font-size: .88rem; color: var(--text); }

/* ─── PARALLAX BAND ─── */
.pb {
    position: relative;
    height: 58vh;
    min-height: 380px;
    overflow: hidden;
}
.pb-bg {
    position: absolute;
    inset: -30% 0;
    background: url('../img/pbbg.png') center/cover no-repeat;
    will-change: transform;
}
.pb-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11,11,11,.65);
    display: flex;
    align-items: center;
    justify-content: center;
}
.pb-quote {
    font-family: var(--ff-d);
    font-size: clamp(1.1rem, 2.8vw, 1.85rem);
    font-style: italic;
    text-align: center;
    max-width: 620px;
    padding: 0 2rem;
    color: rgba(240,237,232,.88);
    line-height: 1.55;
}

/* ─── SERIES ─── */
.series-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 1px;
    background: var(--border);
}
.series-card {
    background: var(--bg-alt);
    padding: 2.5rem 1.75rem;
    text-align: center;
    transition: background .3s;
}
.series-card:first-child { background: var(--bg-card); }
.series-card:hover { background: var(--bg-card); }
.sc-vol {
    font-size: .62rem;
    letter-spacing: .3em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: .8rem;
}
.sc-thumb {
    width: 151px; height: 110px;
    margin: 0 auto 1.2rem;
    border: 1px solid var(--border);
    overflow: hidden;
}
.sc-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sc-thumb-empty {
    display: flex; align-items: center; justify-content: center;
    background: #111;
}
.sc-thumb-empty span {
    font-size: .6rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--muted);
}
.sc-name {
    font-family: var(--ff-d);
    font-size: 1.05rem;
    font-style: italic;
    color: var(--muted);
}
.sc-name.active { color: var(--text); }
.sc-badge {
    display: inline-block;
    margin-top: .8rem;
    font-size: .62rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    padding: 4px 10px;
    border: 1px solid rgba(197,164,106,.4);
    color: var(--accent);
}

/* ─── ORDER ─── */
.order-wrap { max-width: 580px; margin: 0 auto; }
.field-lbl {
    display: block;
    font-size: .68rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: .5rem;
}
.field-line {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border);
    color: var(--text);
    font-family: var(--ff-b);
    font-size: 1rem;
    font-weight: 300;
    padding: .75rem 0;
    outline: none;
    transition: border-color .2s;
    border-radius: 0;
    -webkit-appearance: none;
}
.field-line:focus { border-bottom-color: var(--accent); }
.field-line::placeholder { color: var(--muted); }
.qty-row {
    display: flex;
    align-items: center;
    gap: 1.2rem;
}
.qty-btn {
    width: 38px; height: 38px;
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text);
    cursor: pointer;
    font-size: 1.3rem;
    line-height: 1;
    display: flex; align-items: center; justify-content: center;
    transition: border-color .2s, color .2s;
}
.qty-btn:hover { border-color: var(--accent); color: var(--accent); }
.qty-num {
    font-family: var(--ff-d);
    font-size: 2rem;
    font-weight: 400;
    min-width: 2.8rem;
    text-align: center;
}
.radio-row { display: flex; gap: 2rem; }
.radio-label {
    display: flex;
    align-items: center;
    gap: .65rem;
    cursor: pointer;
    font-size: .78rem;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
    transition: color .2s;
}
.radio-label:has(input:checked) { color: var(--text); }
.radio-label input[type="radio"] {
    appearance: none;
    -webkit-appearance: none;
    width: 16px; height: 16px;
    border: 1px solid var(--border);
    border-radius: 50%;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: border-color .2s;
}
.radio-label input[type="radio"]:checked { border-color: var(--accent); }
.radio-label input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    transform: translate(-50%, -50%);
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--accent);
}
.form-msg {
    display: none;
    padding: 1rem 1.4rem;
    border-left: 2px solid var(--accent);
    background: rgba(197,164,106,.07);
    font-size: .88rem;
    color: var(--text);
}
.form-msg.show { display: block; }
.form-msg.err  { border-left-color: #c05555; background: rgba(192,85,85,.07); }

/* ─── ORDER TOTAL ─── */
.order-total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 1.2rem 0;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.order-total-lbl {
    font-size: .68rem;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--muted);
}
.order-total-val {
    font-family: var(--ff-d);
    font-size: 1.7rem;
    font-weight: 400;
    color: var(--text);
    transition: opacity .2s;
}

/* ─── BOOK PICKER ─── */
.book-picker {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--border);
}
.book-option {
    position: relative;
    background: var(--bg-card);
    padding: 1.2rem .9rem;
    text-align: center;
    cursor: pointer;
    transition: background .2s;
    outline: 2px solid transparent;
    outline-offset: -2px;
}
.book-option:hover:not(.bo-disabled) { background: #1d1d1d; }
.book-option.bo-selected {
    outline-color: var(--accent);
    background: rgba(197,164,106,.06);
}
.book-option.bo-selected::after {
    content: '✓';
    position: absolute;
    top: 6px; right: 8px;
    font-size: .62rem;
    color: var(--accent);
}
.book-option.bo-disabled {
    cursor: not-allowed;
    opacity: .4;
}
.bo-vol {
    font-size: .58rem;
    letter-spacing: .25em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: .6rem;
}
.bo-thumb {
    width: 93px; height: 68px;
    margin: 0 auto .75rem;
    overflow: hidden;
}
.bo-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bo-thumb-empty {
    width: 93px; height: 68px;
    margin: 0 auto .75rem;
    background: #111;
    border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
}
.bo-thumb-empty span {
    font-size: .5rem;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: var(--muted);
}
.bo-name {
    font-family: var(--ff-d);
    font-size: .75rem;
    font-style: italic;
    color: var(--text);
    line-height: 1.3;
}
.bo-badge {
    display: inline-block;
    margin-top: .5rem;
    font-size: .55rem;
    letter-spacing: .12em;
    text-transform: uppercase;
    padding: 2px 8px;
    border: 1px solid rgba(197,164,106,.35);
    color: var(--accent);
}
.bo-badge.na { border-color: var(--border); color: var(--muted); }

/* ─── SPREADS SLIDER ─── */
.spreads-slider {
    margin-top: 5rem;
    padding-top: 4rem;
    border-top: 1px solid var(--border);
}
.spreads-eyebrow { margin-bottom: 2rem; }
.spreads-img {
    width: 100%;
    aspect-ratio: 84 / 27;
    object-fit: cover;
    display: block;
    background: var(--bg-card);
}
.spreads-prev,
.spreads-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10;
    background: rgba(11,11,11,.65);
    border: 1px solid rgba(197,164,106,.25);
    color: var(--accent);
    width: 44px; height: 44px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem;
    cursor: pointer;
    transition: background .2s, border-color .2s, color .2s;
}
.spreads-prev { left: 1rem; }
.spreads-next { right: 1rem; }
.spreads-prev:hover,
.spreads-next:hover {
    background: rgba(197,164,106,.12);
    border-color: var(--accent);
    color: var(--accent-h);
}
.spreads-counter {
    text-align: center;
    margin-top: 1.2rem;
    font-size: .68rem;
    letter-spacing: .22em;
    text-transform: uppercase;
    color: var(--muted);
}

/* ─── FADE IN ─── */
.fi {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .85s ease, transform .85s ease;
}
.fi.on { opacity: 1; transform: translateY(0); }
.fi-d1 { transition-delay: .15s; }
.fi-d2 { transition-delay: .3s; }
.fi-d3 { transition-delay: .45s; }

/* ─── FOOTER ─── */
.site-footer {
    padding: 3.5rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
}
.ft-brand {
    font-family: var(--ff-d);
    font-size: 1.2rem;
    margin-bottom: .6rem;
}
.ft-brand em { font-style: normal; color: var(--accent); }
.ft-meta { font-size: .72rem; color: var(--muted); letter-spacing: .08em; }

/* ─── LANG SWITCH ─── */
.lang-switch {
    display: flex;
    align-items: center;
    gap: .35rem;
}
.lang-btn {
    background: transparent;
    border: none;
    font-family: var(--ff-b);
    font-size: .72rem;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color .2s;
}
.lang-btn:hover { color: var(--text); }
.lang-btn.active { color: var(--accent); }
.lang-sep {
    color: var(--muted);
    font-size: .72rem;
    line-height: 1;
    pointer-events: none;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 767px) {
    .section { padding: 80px 0; }
    .book-frame { margin: 0 auto 3rem; max-width: 300px; }
    .specs { gap: 1.5rem; }
    .hero-title { font-size: clamp(2.8rem, 12vw, 5rem); }
}
@media (max-width: 575px) {
    .btn-ghost { margin-left: 0; margin-top: .75rem; display: block; }
}
@media (max-width: 480px) {
    .book-picker { grid-template-columns: repeat(2, 1fr); }
}