/* ============================================
   THE THOMAS BEALE CIPHER — DECODED
   Aesthetic: Aged parchment, old-world typography,
   Victorian-era pamphlet meets cryptographic mystery
   ============================================ */

:root {
    /* Parchment palette */
    --parchment-light: #f5edd6;
    --parchment: #ede0c4;
    --parchment-dark: #ddd0b0;
    --parchment-deep: #c9b890;
    --ink: #2a1f0e;
    --ink-light: #4a3c28;
    --ink-faded: #6b5d48;
    --rust: #8b4513;
    --rust-dark: #6e3610;
    --gold: #b8860b;
    --gold-light: #d4a843;
    --gold-muted: #a07828;
    --cream: #faf6eb;
    --shadow: rgba(42, 31, 14, 0.12);
    --shadow-deep: rgba(42, 31, 14, 0.25);

    /* Typography */
    --font-display: 'Cinzel', 'Palatino Linotype', 'Book Antiqua', serif;
    --font-body: 'Crimson Text', 'Georgia', serif;
    --font-accent: 'IM Fell English', 'Georgia', serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 3rem;
    --space-xl: 5rem;
    --space-2xl: 8rem;
}

/* ---- RESET & BASE ---- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 24px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--ink);
    background-color: var(--parchment);
    line-height: 1.75;
    position: relative;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ---- TEXTURE OVERLAYS ---- */
.texture-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 1;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(139, 69, 19, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 69, 19, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(42, 31, 14, 0.03) 0%, transparent 50%);
}

.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 2;
    opacity: 0.3;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.4'/%3E%3C/svg%3E");
}

/* ---- NAVIGATION ---- */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: linear-gradient(to bottom, var(--parchment) 0%, rgba(237, 224, 196, 0.95) 100%);
    border-bottom: 1px solid var(--parchment-deep);
    backdrop-filter: blur(8px);
}

.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0.8rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.2em;
    color: var(--rust);
    text-decoration: none;
    font-weight: 600;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 0.2rem;
}

.nav-links a {
    font-family: var(--font-accent);
    font-size: 0.85rem;
    color: var(--ink-faded);
    text-decoration: none;
    padding: 0.4rem 1rem;
    transition: color 0.3s ease;
    letter-spacing: 0.03em;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--rust);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.4rem;
    color: var(--ink-faded);
    cursor: pointer;
}

/* ---- HERO (Home) ---- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-2xl) 2rem;
    overflow: hidden;
    background:
        radial-gradient(ellipse at center, var(--parchment-light) 0%, var(--parchment) 60%, var(--parchment-dark) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 40px,
            rgba(42, 31, 14, 0.015) 40px,
            rgba(42, 31, 14, 0.015) 41px
        );
}

.hero-decoration {
    position: absolute;
    width: 300px;
    height: 300px;
    border: 1px solid var(--parchment-deep);
    opacity: 0.3;
}

.hero-decoration--left {
    left: -50px;
    top: 15%;
    transform: rotate(15deg);
}

.hero-decoration--right {
    right: -80px;
    bottom: 10%;
    transform: rotate(-10deg);
}

.hero-content {
    position: relative;
    z-index: 3;
    animation: fadeInUp 1.2s ease-out;
}

.hero-overline {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1rem;
    color: var(--ink-faded);
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 6vw, 4.2rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--ink);
    letter-spacing: 0.04em;
    margin-bottom: var(--space-md);
}

.hero-title em {
    color: var(--rust);
    font-style: italic;
}

.hero-rule {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin: var(--space-md) 0;
    color: var(--gold-muted);
    font-size: 1.2rem;
}

.hero-rule::before,
.hero-rule::after {
    content: '';
    width: 80px;
    height: 1px;
    background: linear-gradient(to right, transparent, var(--parchment-deep), transparent);
}

.hero-subtitle {
    font-family: var(--font-display);
    font-size: 1.15rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-faded);
    margin-bottom: var(--space-lg);
}

/* ---- PAGE HERO (Inner pages) ---- */
.page-hero {
    padding: 8rem 2rem 3rem;
    text-align: center;
    background:
        radial-gradient(ellipse at center top, var(--parchment-light) 0%, var(--parchment) 100%);
    border-bottom: 1px solid var(--parchment-deep);
}

.page-hero .hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
}

/* ---- BUTTONS ---- */
.btn {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    text-decoration: none;
    padding: 0.9rem 2.5rem;
    border: 1px solid;
    transition: all 0.4s ease;
    cursor: pointer;
}

.btn--primary {
    color: var(--cream);
    background-color: var(--rust);
    border-color: var(--rust);
}

.btn--primary:hover {
    background-color: var(--rust-dark);
    border-color: var(--rust-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(139, 69, 19, 0.2);
}

/* ---- SECTIONS ---- */
.section {
    position: relative;
    z-index: 3;
    padding: var(--space-xl) 2rem;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
}

.container--narrow {
    max-width: 760px;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.section-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    letter-spacing: 0.06em;
    color: var(--ink);
}

.section-rule {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-top: var(--space-sm);
    color: var(--gold-muted);
}

.section-rule::before,
.section-rule::after {
    content: '';
    width: 60px;
    height: 1px;
    background: var(--parchment-deep);
}

/* ---- STATEMENT SECTION ---- */
.statement-section {
    background: linear-gradient(to bottom, var(--parchment) 0%, var(--cream) 50%, var(--parchment) 100%);
}

.statement-card {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    border: 1px solid var(--parchment-deep);
    background: var(--parchment-light);
    position: relative;
    box-shadow:
        0 1px 3px var(--shadow),
        inset 0 0 80px rgba(201, 184, 144, 0.3);
}

.statement-card::before,
.statement-card::after {
    content: '';
    position: absolute;
    width: 30px;
    height: 30px;
    border-color: var(--gold-muted);
}

.statement-card::before {
    top: 12px;
    left: 12px;
    border-top: 1px solid;
    border-left: 1px solid;
}

.statement-card::after {
    bottom: 12px;
    right: 12px;
    border-bottom: 1px solid;
    border-right: 1px solid;
}

.statement-seal {
    font-size: 1.8rem;
    color: var(--gold);
    margin-bottom: var(--space-md);
}

.statement-text {
    font-family: var(--font-accent);
    font-size: 1.1rem;
    line-height: 1.85;
    color: var(--ink-light);
}

.statement-text p + p {
    margin-top: var(--space-sm);
}

.statement-author {
    display: block;
    margin-top: var(--space-md);
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-style: normal;
    letter-spacing: 0.1em;
    color: var(--rust);
}

/* ---- HIGHLIGHTS GRID ---- */
.highlights-section {
    background: var(--parchment);
}

.highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.highlight-card {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    border: 1px solid var(--parchment-deep);
    background: var(--parchment-light);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.highlight-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px var(--shadow);
}

.highlight-number {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--gold);
    margin-bottom: var(--space-sm);
    line-height: 1;
}

.highlight-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.08em;
    margin-bottom: var(--space-sm);
    color: var(--ink);
}

.highlight-card p {
    font-size: 0.92rem;
    color: var(--ink-faded);
    line-height: 1.7;
}

/* ---- CTA SECTION ---- */
.cta-section {
    background: linear-gradient(to bottom, var(--parchment) 0%, var(--parchment-dark) 100%);
}

.cta-card {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-xl);
    border: 1px solid var(--parchment-deep);
    background: var(--cream);
    box-shadow: 0 2px 15px var(--shadow);
}

.cta-card h2 {
    font-family: var(--font-display);
    font-size: 1.6rem;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-sm);
}

.cta-card p {
    font-family: var(--font-accent);
    font-size: 1.05rem;
    color: var(--ink-light);
    margin-bottom: var(--space-md);
}

/* ---- PROSE (Article pages) ---- */
.prose h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    letter-spacing: 0.05em;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--ink);
}

.prose h2:first-child {
    margin-top: 0;
}

.prose h3 {
    font-family: var(--font-display);
    font-size: 1.15rem;
    letter-spacing: 0.04em;
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.prose p {
    margin-bottom: var(--space-md);
    color: var(--ink-light);
}

.prose em {
    color: var(--ink);
}

.prose strong {
    color: var(--ink);
    font-weight: 600;
}

.prose-cta {
    text-align: center;
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
    border: 1px solid var(--parchment-deep);
    background: var(--cream);
}

.prose-cta p {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.1rem;
    margin-bottom: var(--space-md);
    color: var(--ink-light);
}

.prose-sign-off {
    margin-top: var(--space-xl);
    font-family: var(--font-accent);
    font-style: italic;
    font-size: 1.05rem;
}

/* ---- CIPHER LIST (About page) ---- */
.cipher-list {
    margin: var(--space-md) 0 var(--space-lg);
    border: 1px solid var(--parchment-deep);
    background: var(--cream);
}

.cipher-item {
    display: flex;
    align-items: baseline;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-bottom: 1px solid var(--parchment-deep);
}

.cipher-item:last-child {
    border-bottom: none;
}

.cipher-label {
    font-family: var(--font-display);
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    color: var(--rust);
    white-space: nowrap;
    min-width: 100px;
}

.cipher-desc {
    font-family: var(--font-accent);
    font-style: italic;
    color: var(--ink-light);
}

/* ---- DECLARATION BOX (Solution page) ---- */
.declaration-box {
    margin: var(--space-xl) 0;
    padding: var(--space-lg);
    border: 2px solid var(--gold-muted);
    background: var(--cream);
    text-align: center;
    position: relative;
}

.declaration-ornament {
    color: var(--gold);
    font-size: 1.6rem;
    line-height: 1;
    margin: var(--space-sm) 0;
}

.declaration-box h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.declaration-box p {
    font-family: var(--font-accent);
    font-size: 1.1rem;
    color: var(--ink-light);
}

.declaration-note {
    font-style: italic;
    font-size: 0.95rem !important;
    color: var(--ink-faded) !important;
}

.declaration-guarantee {
    margin-top: var(--space-sm);
    font-style: italic;
    color: var(--rust) !important;
    font-weight: 600;
}

/* ---- CONTACT CARDS ---- */
.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin: var(--space-xl) 0;
}

.contact-card {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    border: 1px solid var(--parchment-deep);
    background: var(--cream);
    transition: box-shadow 0.3s ease;
}

.contact-card:hover {
    box-shadow: 0 6px 25px var(--shadow);
}

.contact-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    color: var(--gold);
}

.contact-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-xs);
}

.contact-card p {
    font-size: 0.9rem;
    color: var(--ink-faded);
    margin-bottom: var(--space-sm);
}

.contact-link {
    font-family: var(--font-accent);
    font-size: 1.05rem;
    color: var(--rust);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s ease;
}

.contact-link:hover {
    border-bottom-color: var(--rust);
}

.contact-note {
    font-size: 0.8rem;
    color: var(--ink-faded);
}

.contact-note-box {
    margin-top: var(--space-xl);
    padding: var(--space-lg);
    border: 1px solid var(--parchment-deep);
    background: var(--parchment-light);
}

/* ---- FOOTER ---- */
.main-footer {
    position: relative;
    z-index: 3;
    background: var(--ink);
    color: var(--parchment-deep);
    padding: var(--space-lg) 2rem;
    border-top: 3px solid var(--gold-muted);
}

.footer-inner {
    text-align: center;
}

.footer-brand {
    font-family: var(--font-display);
    font-size: 0.85rem;
    letter-spacing: 0.2em;
    color: var(--gold-muted);
    margin-bottom: var(--space-sm);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: var(--space-sm) 0;
}

.footer-nav a {
    font-family: var(--font-accent);
    font-size: 0.85rem;
    color: var(--parchment-deep);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-nav a:hover {
    color: var(--gold-light);
}

.footer-copy {
    font-size: 0.75rem;
    color: var(--ink-faded);
    margin-top: var(--space-sm);
}

/* ---- ANIMATIONS ---- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
    html {
        font-size: 18px;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--parchment);
        border-bottom: 1px solid var(--parchment-deep);
        flex-direction: column;
        padding: var(--space-sm) 0;
    }

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

    .nav-links a {
        padding: 0.6rem 2rem;
    }

    .nav-toggle {
        display: block;
    }

    .hero {
        min-height: 90vh;
        padding: 6rem 1.5rem;
    }

    .page-hero {
        padding: 6rem 1.5rem 2rem;
    }

    .section {
        padding: var(--space-lg) 1.5rem;
    }

    .highlights-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .contact-cards {
        grid-template-columns: 1fr;
    }

    .statement-card {
        padding: var(--space-lg) var(--space-md);
    }

    .cipher-item {
        flex-direction: column;
        gap: 0.3rem;
    }

    .cta-card {
        padding: var(--space-lg) var(--space-md);
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.7rem;
        letter-spacing: 0.12em;
    }
}