/* ========================================
   mysterious.day — Goblincore Grimoire
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-parchment: #FAF3E0;
    --color-vellum: #F0E4CC;
    --color-pale-parchment: #E8D5B7;
    --color-walnut: #2C1810;
    --color-umber: #3D2B1F;
    --color-burgundy: #6B1D2A;
    --color-brass: #8B6914;
    --color-moss: #4A6741;
    --color-gold: #C4A14E;
    --color-brass-whisper: #8B691440;
    --color-brass-hover: #8B691480;

    --font-display: 'Fraunces', serif;
    --font-body: 'Lora', serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.1vw, 1.2rem);
    line-height: 1.75;
    letter-spacing: 0.005em;
    color: var(--color-umber);
    background-color: var(--color-walnut);
    overflow-x: hidden;
    transition: background-color 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

body.cover-opened {
    background-color: var(--color-parchment);
}

/* ========================================
   COVER PAGE
   ======================================== */
#cover {
    position: relative;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--color-walnut);
    z-index: 10;
}

.cover-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.cover-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 7vw, 6rem);
    font-weight: 900;
    color: var(--color-gold);
    letter-spacing: -0.02em;
    line-height: 1.1;
    opacity: 0;
    animation: fadeIn 800ms 400ms ease-out forwards;
    font-variation-settings: 'WONK' 1, 'SOFT' 100;
    transition: color 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

body.cover-opened .cover-title {
    color: var(--color-walnut);
}

.cover-line {
    width: clamp(200px, 40vw, 400px);
    height: 2px;
    opacity: 0;
    animation: fadeIn 200ms 600ms ease-out forwards;
}

.cover-line line {
    stroke-dasharray: 400;
    stroke-dashoffset: 400;
    animation: drawLine 1200ms 800ms ease-out forwards;
}

.cover-subtitle {
    font-family: var(--font-body);
    font-style: italic;
    font-size: 1.2rem;
    color: var(--color-pale-parchment);
    opacity: 0;
    animation: fadeIn 600ms 1400ms ease-out forwards;
    transition: color 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

body.cover-opened .cover-subtitle {
    color: var(--color-umber);
}

.scroll-hint {
    position: absolute;
    bottom: 3rem;
    opacity: 0;
    animation: fadeIn 400ms 2200ms ease-out forwards;
}

.scroll-hint svg {
    animation: pulse 2s infinite ease-in-out;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

@keyframes drawLine {
    to { stroke-dashoffset: 0; }
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(0.5rem); }
}

/* ========================================
   GRIMOIRE / MAIN CONTENT
   ======================================== */
#grimoire {
    position: relative;
    padding: 2rem clamp(1rem, 4vw, 3rem) 6rem;
    max-width: 1400px;
    margin: 0 auto;
}

.section-divider {
    display: flex;
    justify-content: center;
    padding: 2rem 0 3rem;
}

.section-divider svg {
    width: clamp(200px, 40%, 400px);
    height: 30px;
}

/* ========================================
   CARD GRID
   ======================================== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: clamp(0.75rem, 1.5vw, 1.5rem);
}

/* Card Types */
.card-folio {
    grid-column: span 5;
    grid-row: span 2;
}

.card-specimen {
    grid-column: span 4;
    grid-row: span 1;
}

.card-marginalia {
    grid-column: span 3;
    grid-row: span 3;
}

.card-thumbnail {
    grid-column: span 3;
    grid-row: span 1;
}

/* Tablet */
@media (max-width: 1023px) {
    .card-grid {
        grid-template-columns: repeat(8, 1fr);
    }
    .card-folio { grid-column: span 5; }
    .card-specimen { grid-column: span 4; }
    .card-marginalia { grid-column: span 3; grid-row: span 2; }
    .card-thumbnail { grid-column: span 4; }
}

/* Mobile */
@media (max-width: 767px) {
    .card-grid {
        grid-template-columns: 1fr;
    }
    .card-folio,
    .card-specimen,
    .card-marginalia,
    .card-thumbnail {
        grid-column: span 1;
        grid-row: span 1;
    }
}

/* ========================================
   CARDS
   ======================================== */
.card {
    position: relative;
    background: linear-gradient(to bottom, var(--color-parchment), var(--color-vellum));
    border: 1px solid var(--color-brass-whisper);
    border-radius: 0.25rem;
    padding: clamp(1rem, 2vw, 2rem);
    overflow: hidden;
    content-visibility: auto;

    /* Morph initial state */
    opacity: 0.4;
    transform: scale(0.92);
    filter: sepia(0.6);
    transition:
        opacity 800ms cubic-bezier(0.16, 1, 0.3, 1),
        transform 800ms cubic-bezier(0.16, 1, 0.3, 1),
        filter 800ms cubic-bezier(0.16, 1, 0.3, 1),
        border-color 400ms ease,
        box-shadow 300ms ease;
}

.card.morphed {
    opacity: 1;
    transform: scale(1);
    filter: sepia(0);
    border-radius: 0.25rem;
}

/* Edge darkening vignette */
.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 60%, #2C181015 100%);
    pointer-events: none;
    z-index: 1;
}

/* Paper grain overlay */
.card::after {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='4'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 2;
    opacity: 1;
    transition: opacity 300ms ease;
}

/* Foxing spots via pseudo-elements on card-body */
.card-body {
    position: relative;
}

/* Hover states */
@media (hover: hover) {
    .card:hover {
        transform: translateY(-4px);
        border-color: var(--color-brass-hover);
        box-shadow: 0 8px 24px rgba(44, 24, 16, 0.12);
    }
    .card:hover::after {
        opacity: 2.5;
    }
    .card.card-folio:hover .ribbon {
        transform: translateY(1rem);
    }
}

/* ========================================
   CARD INTERNALS
   ======================================== */
.card-header {
    position: relative;
    z-index: 3;
    margin-bottom: 1rem;
}

.card-header h2 {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.5vw, 2rem);
    font-weight: 800;
    color: var(--color-walnut);
    letter-spacing: -0.02em;
    line-height: 1.1;
    font-variation-settings: 'SOFT' 50, 'WONK' 1;
    transition: font-variation-settings 600ms ease;
}

@media (hover: hover) {
    .card:hover .card-header h2 {
        font-variation-settings: 'SOFT' 50, 'WONK' 1;
    }
}

.card-header em {
    font-style: italic;
}

.card-divider-mini {
    margin-top: 0.5rem;
}

.card-divider-mini svg {
    width: 120px;
    height: 10px;
}

.card-body {
    position: relative;
    z-index: 3;
}

.card-body p {
    margin-bottom: 0.75rem;
}

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

.card-footer {
    position: relative;
    z-index: 3;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--color-brass-whisper);
}

.catalogue-number {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-brass);
}

/* ========================================
   ENGRAVINGS
   ======================================== */
.engraving {
    text-align: center;
    margin-bottom: 1rem;
}

.svg-engraving {
    max-width: 160px;
    height: auto;
    display: inline-block;
}

.card-folio .svg-engraving {
    max-width: 200px;
}

.card-thumbnail .svg-engraving {
    max-width: 80px;
}

.plate-number {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-brass);
    margin-top: 0.5rem;
}

/* SVG stroke drawing animation */
.svg-engraving path,
.svg-engraving line,
.svg-engraving ellipse,
.svg-engraving circle,
.svg-engraving polygon,
.svg-engraving rect {
    transition: stroke-dashoffset 2000ms ease-out;
}

/* ========================================
   CARD SPECIFIC STYLES
   ======================================== */

/* Folio cards — corner ornaments & ribbon */
.card-corner {
    position: absolute;
    z-index: 4;
}

.card-corner-tl {
    top: 4px;
    left: 4px;
}

.card-corner-br {
    bottom: 4px;
    right: 4px;
}

.ribbon {
    position: absolute;
    right: 1.5rem;
    top: 0;
    width: 18px;
    height: calc(100% + 2rem);
    background: var(--color-burgundy);
    clip-path: polygon(0 0, 100% 0, 100% 100%, 50% calc(100% - 12px), 0 100%);
    z-index: 0;
    opacity: 0.7;
    transition: transform 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Marginalia cards */
.card-marginalia {
    font-size: 0.95rem;
}

.card-marginalia .card-body {
    font-style: italic;
}

.field-note {
    margin-bottom: 0.75rem;
}

.annotation {
    font-size: 0.88rem;
    color: var(--color-brass);
    padding-left: 1rem;
    border-left: 2px solid var(--color-brass-whisper);
}

/* Thumbnail cards */
.card-thumbnail {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    min-height: 140px;
}

.card-thumbnail .catalogue-number {
    margin-top: 0.5rem;
    font-size: 0.65rem;
}

/* ========================================
   DROP CAPS
   ======================================== */
.drop-cap {
    float: left;
    font-family: var(--font-display);
    font-size: 3em;
    font-weight: 900;
    line-height: 0.8;
    color: var(--color-burgundy);
    margin-right: 0.1em;
    margin-top: 0.05em;
}

/* ========================================
   EX LIBRIS PLATE
   ======================================== */
.ex-libris-plate {
    text-align: center;
    margin-bottom: 1.5rem;
}

.ex-libris-plate svg {
    max-width: 220px;
    height: auto;
}

/* ========================================
   TOC TOGGLE BUTTON
   ======================================== */
#toc-toggle {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 100;
    background: var(--color-walnut);
    border: 1px solid var(--color-brass);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: transform 300ms ease, background-color 300ms ease;
}

#toc-toggle:hover {
    transform: scale(1.1);
    background-color: var(--color-umber);
}

/* ========================================
   TOC DRAWER
   ======================================== */
#toc-drawer {
    position: fixed;
    top: 0;
    right: 0;
    width: 0;
    height: 100vh;
    background: var(--color-walnut);
    z-index: 99;
    overflow: hidden;
    transition: width 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

#toc-drawer.open {
    width: 320px;
}

.toc-inner {
    width: 320px;
    padding: 3rem 2rem;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 400ms cubic-bezier(0.16, 1, 0.3, 1) 100ms;
}

#toc-drawer.open .toc-inner {
    transform: scaleX(1);
}

#toc-drawer h3 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-pale-parchment);
    margin-bottom: 1rem;
    font-variation-settings: 'SOFT' 80, 'WONK' 1;
}

.toc-divider {
    margin-bottom: 1.5rem;
}

.toc-divider svg {
    width: 100%;
    height: 2px;
}

#toc-drawer ul {
    list-style: none;
}

#toc-drawer li {
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--color-pale-parchment);
    padding: 0.6rem 0;
    border-bottom: 1px solid #8B691420;
    cursor: pointer;
    transition: color 300ms ease;
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
}

#toc-drawer li:hover {
    color: var(--color-gold);
}

.toc-num {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--color-brass);
    letter-spacing: 0.05em;
    min-width: 2rem;
}

.toc-ref {
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    color: var(--color-brass);
    opacity: 0.6;
}

/* ========================================
   SCROLLBAR
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-vellum);
}

::-webkit-scrollbar-thumb {
    background: var(--color-brass);
    border-radius: 4px;
}

/* ========================================
   SELECTION
   ======================================== */
::selection {
    background: var(--color-burgundy);
    color: var(--color-parchment);
}