/* ── Custom Properties ── */
:root {
    --ink:        #1a1108;
    --parchment:  #f5ead8;
    --aged:       #e8d5b0;
    --gold:       #c8922a;
    --gold-light: #e8b84b;
    --rust:       #8b3a1a;
    --muted:      #7a6a52;
    --divider:    rgba(200, 146, 42, 0.3);

    --font-display: 'Cinzel', 'Trajan Pro', serif;
    --font-body:    'EB Garamond', 'Garamond', Georgia, serif;

    --radius: 2px;
    --max-width: 680px;
}

/* ── Reset & Base ── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    background-color: var(--ink);
    color: var(--parchment);
    font-family: var(--font-body);
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 1.25rem 4rem;
    background-image:
            radial-gradient(ellipse at 20% 0%, #2e1f0a 0%, transparent 60%),
            radial-gradient(ellipse at 80% 100%, #2a1505 0%, transparent 60%);
}

#home-link {
    text-decoration: none;
}

/* ── Layout ── */
.site-header {
    width: 100%;
    max-width: var(--max-width);
    padding: 3rem 0 2rem;
    text-align: center;
}

main {
    width: 100%;
    max-width: var(--max-width);
    flex: 1;
}

footer {
    width: 100%;
    max-width: var(--max-width);
    margin-top: 4rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--divider);
    text-align: center;
    font-size: 0.8rem;
    color: var(--muted);
    line-height: 1.7;
}

footer a {
    color: var(--gold);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* ── Header ── */
.site-title {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 6vw, 2.6rem);
    font-weight: 400;
    letter-spacing: 0.12em;
    color: var(--gold-light);
    text-transform: uppercase;
    line-height: 1.15;
}

.site-subtitle {
    margin-top: 0.5rem;
    font-family: var(--font-body);
    font-style: italic;
    font-size: clamp(0.95rem, 3vw, 1.1rem);
    color: var(--muted);
    letter-spacing: 0.04em;
}

.header-rule {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin: 1.5rem auto 0;
    max-width: 320px;
    color: var(--gold);
    font-size: 0.9rem;
}

.header-rule::before,
.header-rule::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--divider);
}

/* ── Navigation ── */
.site-nav {
    margin-top: 1.25rem;
    position: relative;
}

.nav-links {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.nav-link {
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
    color: var(--gold);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    margin: 0 auto;
    transition: color 0.2s;
}

.nav-toggle:hover {
    color: var(--gold);
}

@media (max-width: 599px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
        padding: 0.75rem 0 0.25rem;
    }

    .site-nav.open .nav-links {
        display: flex;
    }
}

/* ── Work Selector ── */
.work-selector {
    margin-bottom: 2rem;
}

.work-selector label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 0.5rem;
}

.work-selector select {
    width: 100%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--divider);
    color: var(--parchment);
    font-family: var(--font-body);
    font-size: 1rem;
    padding: 0.65rem 1rem;
    border-radius: var(--radius);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23c8922a' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    cursor: pointer;
    transition: border-color 0.2s;
}

.work-selector select:focus {
    outline: none;
    border-color: var(--gold);
}

/* ── Cast Button ── */
.cast-button {
    display: block;
    width: 100%;
    padding: 1rem 1.5rem;
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold-light);
    font-family: var(--font-display);
    font-size: clamp(0.85rem, 3vw, 1rem);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    cursor: pointer;
    border-radius: var(--radius);
    transition: background 0.25s, color 0.25s, box-shadow 0.25s;
    position: relative;
    overflow: hidden;
    min-height: 56px;
}

.cast-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gold);
    opacity: 0;
    transition: opacity 0.25s;
}

.cast-button:hover::before,
.cast-button:focus-visible::before {
    opacity: 0.08;
}

.cast-button:active::before {
    opacity: 0.15;
}

.cast-button:focus-visible {
    outline: 2px solid var(--gold);
    outline-offset: 3px;
}

.cast-button span {
    position: relative;
}

/* ── Result Card ── */
.result-card {
    margin-top: 2rem;
    border: 1px solid var(--divider);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.03);
    overflow: hidden;
    opacity: 0;
    transform: translateY(8px);
    transition: opacity 0.45s ease, transform 0.45s ease;
}

.result-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.result-reference {
    padding: 0.6rem 1.25rem;
    background: rgba(200, 146, 42, 0.08);
    border-bottom: 1px solid var(--divider);
    font-family: var(--font-display);
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--gold);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.share-btn {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--muted);
    padding: 0.2rem;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-family: var(--font-display);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

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

.result-body {
    padding: 1.5rem 1.25rem;
}

.result-latin {
    font-style: italic;
    font-size: clamp(1rem, 3.5vw, 1.2rem);
    line-height: 1.85;
    color: var(--parchment);
    margin-bottom: 1.25rem;
}

.result-divider {
    text-align: center;
    color: var(--gold);
    font-size: 0.75rem;
    margin-bottom: 1.25rem;
    opacity: 0.6;
}

.result-english {
    font-size: clamp(0.95rem, 3vw, 1.1rem);
    line-height: 1.85;
    color: var(--aged);
}

/* ── Ad Unit ── */
.ad-unit {
    margin-top: 2rem;
    min-height: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ── Editorial ── */
.editorial {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--divider);
}

.editorial h2 {
    font-family: var(--font-display);
    font-size: clamp(0.9rem, 3vw, 1.1rem);
    font-weight: 400;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gold);
    margin-bottom: 1.25rem;
}

.editorial p {
    font-size: clamp(0.9rem, 3vw, 1rem);
    line-height: 1.85;
    color: var(--muted);
    margin-bottom: 1rem;
}

.editorial p:last-child {
    margin-bottom: 0;
}

.editorial em {
    color: var(--aged);
    font-style: italic;
}

.how-to-use-content {
    padding: 1.5rem 1.25rem;
}

.how-to-use-content p {
    font-size: clamp(0.9rem, 3vw, 1rem);
    line-height: 1.85;
    color: var(--muted);
    margin-bottom: 1rem;
}

.how-to-use-content p:last-child {
    margin-bottom: 0;
}

.how-to-use-content em {
    color: var(--aged);
    font-style: italic;
}

.guide-toggle-btn {
    display: block;
    margin: 1.5rem auto 0;
    background: none;
    border: none;
    color: var(--muted);
    font-family: var(--font-display);
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    opacity: 0.6;
    transition: opacity 0.2s;
}

.guide-toggle-btn:hover {
    opacity: 1;
}

#book-image-container {
    display: flex;
    justify-content: center;
}

/* ── Utility ── */
[hidden] {
    display: none !important;
}

/* ── Reduced Motion ── */
@media (prefers-reduced-motion: reduce) {
    .result-card {
        transition: none;
    }
}

/* ── Desktop ── */
@media (min-width: 700px) {
    body {
        padding: 0 2rem 4rem;
    }

    .site-header {
        padding: 4rem 0 2.5rem;
    }

    .result-body {
        padding: 2rem 1.75rem;
    }
}