/* ============================================
   diplomacy.day - Styles
   Navy-Parchment Diplomatic Palette
   ============================================ */

/* --- Palette --- */
:root {
    --navy-ink: #0B1D3A;
    --parchment-gold: #C4A24E;
    --ivory-linen: #F5F0E6;
    --consul-slate: #5A6E7F;
    --deep-vermillion: #8B2E2E;
    --warm-graphite: #2C2C2C;
    --diplomatic-blush: #D4B896;
}

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

html {
    scroll-snap-type: y proximity;
    scroll-behavior: smooth;
}

body {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    color: var(--warm-graphite);
    background-color: var(--navy-ink);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- Section Backgrounds --- */
.section-navy {
    background-color: var(--navy-ink);
    color: var(--ivory-linen);
}

.section-ivory {
    background-color: var(--ivory-linen);
    color: var(--warm-graphite);
}

/* --- Treaty Hall Entrance --- */
#treaty-hall {
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    scroll-snap-align: start;
}

.treaty-hall-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

.title-baskervville {
    font-family: 'Baskervville', serif;
    font-weight: 400;
    font-size: clamp(32px, 6vw, 72px);
    letter-spacing: 0.12em;
    color: var(--ivory-linen);
    opacity: 0;
    transform: translateY(8px);
    margin-bottom: 24px;
}

.title-baskervville.animate-in .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(8px);
    animation: charFadeIn 300ms forwards;
}

@keyframes charFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.treaty-line {
    width: 0;
    height: 1px;
    background-color: var(--parchment-gold);
    opacity: 0;
    will-change: width, opacity;
}

.treaty-line.animate-in {
    animation: treatyLineDraw 1200ms linear forwards;
}

@keyframes treatyLineDraw {
    0% {
        width: 0;
        opacity: 0;
    }
    5% {
        opacity: 1;
    }
    100% {
        width: 60vw;
        opacity: 1;
    }
}

.subtitle-dm {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(13px, 1.1vw, 16px);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--ivory-linen);
    opacity: 0;
    margin-top: 20px;
    transition: opacity 800ms ease;
}

.subtitle-dm.animate-in {
    opacity: 0.6;
}

/* --- Wax Seal --- */
.wax-seal {
    position: absolute;
    bottom: 8vh;
    left: 50%;
    transform: translateX(-50%) scale(0.8) rotate(-5deg);
    opacity: 0;
    will-change: opacity, transform;
    transition: opacity 600ms ease, transform 600ms ease;
}

.wax-seal.animate-in {
    opacity: 1;
    transform: translateX(-50%) scale(1) rotate(0deg);
}

/* --- Summit Chapters --- */
.summit-chapter {
    min-height: 90vh;
    padding: 10vh 8vw;
    position: relative;
    overflow: hidden;
    scroll-snap-align: start;
}

.chapter-watermark {
    position: absolute;
    top: 4vh;
    left: 5vw;
    font-family: 'Baskervville', serif;
    font-weight: 400;
    font-size: 120px;
    color: currentColor;
    opacity: 0;
    will-change: opacity;
    transition: opacity 600ms ease 200ms;
    pointer-events: none;
}

.section-navy .chapter-watermark {
    color: var(--ivory-linen);
    opacity: 0;
}

.section-ivory .chapter-watermark {
    color: var(--warm-graphite);
    opacity: 0;
}

.chapter-watermark.animate-in {
    opacity: 0.05 !important;
}

/* --- Spread Layout --- */
.spread-layout {
    display: flex;
    gap: 0;
    align-items: stretch;
    min-height: 60vh;
    opacity: 0;
    transform: translateY(30px);
    will-change: opacity, transform;
    transition: opacity 800ms cubic-bezier(0.33, 0, 0.2, 1), transform 800ms cubic-bezier(0.33, 0, 0.2, 1);
}

.spread-layout.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.spread-left {
    flex-direction: row;
}

.spread-right {
    flex-direction: row;
}

.spread-wide {
    flex: 0 0 60%;
    padding: 4vh 4vw;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.spread-narrow {
    flex: 0 0 40%;
    padding: 4vh 3vw;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    border-left: 1px solid var(--parchment-gold);
}

.spread-right .spread-narrow {
    border-left: none;
    border-right: 1px solid var(--parchment-gold);
}

/* --- Marble Panel --- */
.marble-panel {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(212, 184, 150, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(212, 184, 150, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, var(--ivory-linen) 0%, var(--ivory-linen) 100%);
}

.marble-panel-dark {
    background:
        radial-gradient(ellipse at 20% 30%, rgba(90, 110, 127, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(90, 110, 127, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, var(--navy-ink) 0%, var(--navy-ink) 100%);
    border-left: none;
    border-right: 1px solid var(--parchment-gold);
}

/* --- Section Labels --- */
.section-label {
    font-family: 'DM Sans', sans-serif;
    font-weight: 300;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--consul-slate);
    margin-bottom: 16px;
    display: block;
}

.section-label-light {
    color: var(--consul-slate);
}

/* --- Chapter Headings --- */
.chapter-heading {
    font-family: 'Baskervville', serif;
    font-weight: 400;
    font-size: clamp(32px, 5vw, 72px);
    letter-spacing: 0.08em;
    color: var(--navy-ink);
    margin-bottom: 32px;
    line-height: 1.2;
}

.chapter-heading-light {
    color: var(--ivory-linen);
}

/* --- Body Text --- */
.body-text {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(15px, 1.1vw, 18px);
    line-height: 1.85;
    color: var(--warm-graphite);
    max-width: 55ch;
    margin-bottom: 20px;
}

.body-text-light {
    color: var(--ivory-linen);
    opacity: 0.9;
}

/* --- Pull Quotes --- */
.pull-quote {
    font-family: 'Baskervville', serif;
    font-style: italic;
    font-size: clamp(20px, 2.5vw, 36px);
    line-height: 1.5;
    color: var(--navy-ink);
    border-left: 3px solid var(--parchment-gold);
    padding-left: 24px;
    max-width: 40ch;
    transition: border-color 300ms ease;
}

.pull-quote:hover {
    border-color: var(--deep-vermillion);
}

.pull-quote-light {
    color: var(--ivory-linen);
}

.pull-quote cite {
    display: block;
    margin-top: 16px;
    font-family: 'DM Sans', sans-serif;
    font-style: normal;
    font-weight: 300;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--consul-slate);
}

/* --- Gold Divider --- */
.gold-divider {
    width: 0;
    height: 1px;
    background-color: var(--parchment-gold);
    margin: 0 auto;
    will-change: width;
    transition: width 800ms cubic-bezier(0.33, 0, 0.2, 1);
}

.gold-divider.animate-in {
    width: 100%;
}

/* --- Accord Gallery --- */
#accord-gallery {
    padding: 10vh 8vw;
    scroll-snap-align: start;
}

.gallery-header {
    text-align: center;
    margin-bottom: 8vh;
}

.gallery-header .section-label {
    display: block;
    text-align: center;
}

.gallery-header .chapter-heading {
    display: block;
}

/* --- Bento Grid --- */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
}

.bento-card {
    background-color: var(--ivory-linen);
    border: 2px solid var(--navy-ink);
    padding: 40px 32px;
    border-radius: 0;
    opacity: 0;
    transform: translateY(20px);
    will-change: opacity, transform, box-shadow;
    transition: opacity 600ms cubic-bezier(0.33, 0, 0.2, 1),
                transform 600ms cubic-bezier(0.33, 0, 0.2, 1),
                box-shadow 300ms ease;
    cursor: default;
}

.bento-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.bento-card.animate-in:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 20px rgba(11, 29, 58, 0.15);
}

.card-numeral {
    font-family: 'Baskervville', serif;
    font-weight: 400;
    font-size: 36px;
    color: var(--parchment-gold);
    display: block;
    margin-bottom: 16px;
    letter-spacing: 0.08em;
}

.card-title {
    font-family: 'Baskervville', serif;
    font-weight: 400;
    font-size: 22px;
    letter-spacing: 0.05em;
    color: var(--navy-ink);
    margin-bottom: 12px;
}

.card-body {
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    font-size: clamp(14px, 1vw, 16px);
    line-height: 1.75;
    color: var(--consul-slate);
}

/* --- Closing Ceremony --- */
#closing-ceremony {
    height: 50vh;
    display: flex;
    align-items: center;
    justify-content: center;
    scroll-snap-align: start;
}

.closing-content {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.closing-quote {
    font-family: 'Baskervville', serif;
    font-style: italic;
    font-weight: 400;
    font-size: clamp(20px, 3vw, 42px);
    color: var(--ivory-linen);
    letter-spacing: 0.04em;
    line-height: 1.5;
    max-width: 60ch;
    margin-bottom: 32px;
    opacity: 0;
    transform: translateY(20px);
    will-change: opacity, transform;
    transition: opacity 800ms cubic-bezier(0.33, 0, 0.2, 1), transform 800ms cubic-bezier(0.33, 0, 0.2, 1);
}

.closing-quote.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.closing-treaty-line {
    width: 60vw;
    opacity: 1;
    will-change: width;
    transition: width 1200ms linear;
}

.closing-treaty-line.animate-in {
    width: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
    html {
        scroll-snap-type: none;
    }

    .spread-layout {
        flex-direction: column !important;
    }

    .spread-wide,
    .spread-narrow {
        flex: 1 1 100%;
        border-left: none !important;
        border-right: none !important;
        border-bottom: 1px solid var(--parchment-gold);
    }

    .spread-narrow {
        padding: 4vh 6vw;
    }

    .summit-chapter {
        padding: 8vh 6vw;
    }

    .bento-grid {
        grid-template-columns: 1fr;
    }

    .chapter-watermark {
        font-size: 80px;
        left: 3vw;
    }

    #accord-gallery {
        padding: 8vh 6vw;
    }
}