/* =========================================================
   diplomatic.bar — Translucent Frost / Grainy-Textured
   Typography compliance tokens: Interactions:** (400 grandeur Display" (Google Fonts
   ========================================================= */

:root {
    --color-marble: #F4F1ED;
    --color-frost: #E8E4DF;
    --color-ink: #1C1A17;
    --color-dossier: #6B6560;
    --color-gold: #B8963E;
    --color-frost-blue: #8BA7B8;
    --color-chamber: #2A2D3A;
    --color-etch: rgba(184, 150, 62, 0.12);
    --color-etch-strong: rgba(184, 150, 62, 0.22);

    --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-body: 'DM Sans', 'Inter', system-ui, -apple-system, sans-serif;
    --font-accent: 'Cormorant Garamond', 'Times New Roman', serif;

    --grain-opacity: 0.04;
    --lift-transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
                       filter 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
                       box-shadow 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);

    --content-max: min(680px, 85vw);
    --section-gap: clamp(6rem, 15vh, 12rem);
}

/* =========================================================
   Base reset & global
   ========================================================= */

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

html {
    scroll-behavior: smooth;
    background: var(--color-marble);
}

body {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    line-height: 1.75;
    letter-spacing: 0.015em;
    color: var(--color-ink);
    background: var(--color-marble);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* Subtle decorative gold rules around marble */
body::after {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background:
        linear-gradient(90deg, transparent 0%, transparent calc(100% - 1px), var(--color-etch) 100%),
        linear-gradient(90deg, var(--color-etch) 0%, transparent 1px, transparent 100%);
    background-size: 100% 100%;
    opacity: 0.4;
    z-index: 50;
    mix-blend-mode: multiply;
}

/* =========================================================
   Grain Overlay — Defining textural layer
   ========================================================= */

.grain-overlay {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 9999;
    opacity: var(--grain-opacity);
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='240' height='240'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.11 0 0 0 0 0.10 0 0 0 0 0.09 0 0 0 0.9 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    background-size: 240px 240px;
    animation: grain-shift 8s steps(8) infinite;
}

@keyframes grain-shift {
    0%   { transform: translate(0, 0); }
    10%  { transform: translate(-5%, -5%); }
    20%  { transform: translate(-10%, 3%); }
    30%  { transform: translate(5%, -8%); }
    40%  { transform: translate(-3%, 10%); }
    50%  { transform: translate(8%, 5%); }
    60%  { transform: translate(-8%, -3%); }
    70%  { transform: translate(4%, 8%); }
    80%  { transform: translate(-6%, -6%); }
    90%  { transform: translate(3%, 3%); }
    100% { transform: translate(0, 0); }
}

/* =========================================================
   Typography — display, body, accent
   ========================================================= */

h1, h2, h3 {
    font-family: var(--font-display);
    color: var(--color-ink);
    line-height: 1.1;
    font-weight: 700;
}

p {
    font-family: var(--font-body);
}

em {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    color: var(--color-ink);
    font-size: 1.08em;
    letter-spacing: 0.02em;
}

strong {
    font-weight: 500;
    color: var(--color-ink);
}

/* =========================================================
   THE VESTIBULE
   ========================================================= */

.vestibule {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(3rem, 8vh, 6rem) 2rem;
    position: relative;
}

.vestibule::before {
    content: "";
    position: absolute;
    inset: 4vh 6vw;
    border: 1px solid var(--color-etch);
    pointer-events: none;
    z-index: 0;
}

.vestibule::after {
    content: "";
    position: absolute;
    inset: 5vh 7vw;
    border: 1px solid var(--color-etch);
    pointer-events: none;
    opacity: 0.5;
    z-index: 0;
}

.vestibule__inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: clamp(1.5rem, 3vh, 2.5rem);
    max-width: var(--content-max);
}

.seal-container {
    width: clamp(220px, 34vw, 340px);
    height: clamp(220px, 34vw, 340px);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: default;
    transition: var(--lift-transition);
    filter: drop-shadow(0 2px 6px rgba(184, 150, 62, 0.08));
}

.seal-container:hover {
    transform: scale(1.03);
    filter: drop-shadow(0 6px 12px rgba(184, 150, 62, 0.15));
}

.seal {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.seal__ring {
    transform-origin: 150px 150px;
    animation: seal-rotate 120s linear infinite;
}

@keyframes seal-rotate {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.seal__diamond {
    transform-origin: 150px 150px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.seal-container:hover .seal__diamond {
    transform: scale(1.05);
}

.vestibule__title {
    font-family: var(--font-display);
    font-size: clamp(2.8rem, 7vw, 5.5rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink);
    line-height: 1.05;
}

.vestibule__dot {
    color: var(--color-gold);
    font-weight: 400;
    font-style: italic;
    font-family: var(--font-accent);
}

.vestibule__rule,
.frost-chamber__rule {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: min(320px, 70%);
    justify-content: center;
    opacity: 0.85;
}

.rule-line {
    flex: 1;
    height: 1px;
    background: var(--color-gold);
    opacity: 0.55;
}

.rule-diamond {
    width: 8px;
    height: 8px;
    background: var(--color-gold);
    transform: rotate(45deg);
    flex-shrink: 0;
}

.vestibule__communique {
    font-family: var(--font-body);
    font-size: clamp(0.82rem, 1.3vw, 0.95rem);
    font-weight: 400;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--color-dossier);
    line-height: 2;
    max-width: 52ch;
}

.vestibule__timestamp {
    font-family: var(--font-accent);
    font-style: italic;
    font-size: clamp(1rem, 1.5vw, 1.2rem);
    color: var(--color-ink);
    display: inline-flex;
    gap: 0.8rem;
    align-items: center;
    letter-spacing: 0.04em;
}

.timestamp__dot,
.dateline__dot,
.stamp__dot {
    color: var(--color-gold);
    font-size: 0.7em;
}

.vestibule__scroll-hint {
    margin-top: clamp(1rem, 3vh, 2rem);
    font-family: var(--font-body);
    font-size: 0.72rem;
    letter-spacing: 0.36em;
    text-transform: uppercase;
    color: var(--color-dossier);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.6rem;
    opacity: 0.7;
}

.scroll-arrow {
    font-size: 1rem;
    color: var(--color-gold);
    animation: scroll-drift 3.2s ease-in-out infinite;
}

@keyframes scroll-drift {
    0%, 100% { transform: translateY(0); opacity: 0.5; }
    50%      { transform: translateY(6px); opacity: 1; }
}

/* =========================================================
   THE GALLERY — single column procession
   ========================================================= */

.gallery {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--section-gap);
    padding: var(--section-gap) 1.5rem;
    max-width: 100%;
    position: relative;
}

.dossier {
    width: var(--content-max);
    margin: 0 auto;
    position: relative;
}

.dossier__header {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    margin-bottom: clamp(2rem, 5vh, 3.5rem);
}

.dossier__crest {
    width: min(260px, 80%);
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.85;
    transition: var(--lift-transition);
}

.dossier__crest svg {
    width: 100%;
    height: 100%;
    overflow: visible;
}

.dossier:hover .dossier__crest {
    transform: translateY(-2px);
    opacity: 1;
}

.dossier__index {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--color-gold);
    letter-spacing: 0.3em;
    text-transform: uppercase;
}

.dossier__title {
    font-family: var(--font-display);
    font-size: clamp(1.4rem, 3vw, 2.4rem);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink);
    line-height: 1.1;
}

.dossier__body {
    display: flex;
    flex-direction: column;
    gap: clamp(1.25rem, 3vh, 2rem);
}

.dossier__dateline {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--color-dossier);
    display: flex;
    flex-wrap: wrap;
    gap: 0.7rem;
    align-items: center;
    letter-spacing: 0.06em;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-etch);
}

.dossier__lede {
    font-family: var(--font-body);
    font-size: clamp(1.05rem, 1.9vw, 1.22rem);
    line-height: 1.7;
    color: var(--color-ink);
    font-weight: 400;
}

.dossier__text {
    font-family: var(--font-body);
    font-size: clamp(1rem, 1.7vw, 1.1rem);
    line-height: 1.8;
    color: var(--color-ink);
}

.dossier__text--muted {
    color: var(--color-dossier);
    font-size: 0.95rem;
    font-style: italic;
    font-family: var(--font-accent);
    font-weight: 600;
    letter-spacing: 0.02em;
    line-height: 1.7;
}

.dossier__quote {
    margin: 1rem 0;
    padding: 1.5rem 1.75rem 1.5rem 2.25rem;
    border-left: 1px solid var(--color-gold);
    background: rgba(232, 228, 223, 0.4);
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.55;
    color: var(--color-ink);
    position: relative;
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    transition: var(--lift-transition);
}

.dossier__quote:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(28, 26, 23, 0.06);
}

.quote__mark {
    position: absolute;
    top: -0.4rem;
    left: 0.5rem;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-gold);
    line-height: 1;
    opacity: 0.6;
}

.quote__source {
    display: block;
    margin-top: 1rem;
    font-family: var(--font-body);
    font-style: normal;
    font-weight: 400;
    font-size: 0.78rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-dossier);
}

/* =========================================================
   Frost Panels
   ========================================================= */

.frost-panel {
    background: rgba(232, 228, 223, 0.55);
    backdrop-filter: blur(12px) saturate(1.2);
    -webkit-backdrop-filter: blur(12px) saturate(1.2);
    border: 1px solid rgba(184, 150, 62, 0.18);
    padding: clamp(1.75rem, 4vh, 2.75rem) clamp(1.5rem, 3vw, 2.5rem);
    position: relative;
    transition: var(--lift-transition);
}

.frost-panel:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(28, 26, 23, 0.06);
    border-color: rgba(184, 150, 62, 0.32);
}

.frost-panel::before,
.frost-panel::after {
    content: "";
    position: absolute;
    width: 14px;
    height: 14px;
    border: 1px solid var(--color-gold);
}

.frost-panel::before {
    top: -7px;
    left: -7px;
    border-right: none;
    border-bottom: none;
}

.frost-panel::after {
    bottom: -7px;
    right: -7px;
    border-left: none;
    border-top: none;
}

.frost-panel__kicker {
    font-family: var(--font-body);
    font-size: 0.75rem;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--color-gold);
    margin-bottom: 1.25rem;
    font-weight: 500;
}

.frost-panel .dossier__text + .dossier__text {
    margin-top: 1rem;
}

/* =========================================================
   Ledger (bullet list with diamond marks)
   ========================================================= */

.ledger {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.1rem;
    padding: 1rem 0 0 0;
}

.ledger__item {
    display: grid;
    grid-template-columns: 1.2rem 1fr;
    gap: 1rem;
    align-items: baseline;
    padding: 0.5rem 0;
    border-bottom: 1px dashed rgba(184, 150, 62, 0.2);
    transition: var(--lift-transition);
}

.ledger__item:last-child {
    border-bottom: none;
}

.ledger__item:hover {
    transform: translateX(4px);
}

.ledger__mark {
    color: var(--color-gold);
    font-size: 0.65rem;
    line-height: 1;
    padding-top: 0.4rem;
}

.ledger__body {
    font-family: var(--font-body);
    line-height: 1.75;
    color: var(--color-ink);
    font-size: 1rem;
}

/* =========================================================
   Gallery dividers
   ========================================================= */

.gallery__divider {
    width: min(600px, 70vw);
    margin: 0 auto;
    opacity: 0.85;
    display: flex;
    justify-content: center;
}

.gallery__divider svg {
    width: 100%;
    height: 20px;
}

/* =========================================================
   THE CIPHER ROOM — interactive section
   ========================================================= */

.dossier--cipher {
    width: min(820px, 92vw);
}

.dossier--cipher .dossier__lede {
    text-align: center;
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    color: var(--color-ink);
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    letter-spacing: 0.02em;
    line-height: 1.55;
    max-width: 56ch;
    margin: 0 auto;
}

.cipher-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: clamp(1rem, 2.5vw, 1.75rem);
    padding: clamp(1.5rem, 4vh, 3rem) 0;
}

.cipher-cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    padding: 1.25rem 0.75rem;
    background: rgba(232, 228, 223, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(184, 150, 62, 0.14);
    transition: var(--lift-transition);
    cursor: pointer;
    position: relative;
}

.cipher-cell::before {
    content: "";
    position: absolute;
    inset: 6px;
    border: 1px solid transparent;
    transition: border-color 0.4s ease;
    pointer-events: none;
}

.cipher-cell:hover {
    transform: translateY(-4px);
    border-color: rgba(184, 150, 62, 0.35);
    box-shadow: 0 8px 20px rgba(28, 26, 23, 0.06);
}

.cipher-cell:hover::before {
    border-color: rgba(184, 150, 62, 0.2);
}

.cipher-cell__svg {
    width: 96px;
    height: 96px;
    display: block;
}

.cipher-shape {
    transform-origin: 60px 60px;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.4s ease;
}

.cipher-cell:hover .cipher-shape {
    transform: rotate(45deg);
}

.cipher-cell--active .cipher-shape {
    transform: rotate(90deg) scale(1.05);
    opacity: 0.9;
}

.cipher-cell__label {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    font-size: 0.92rem;
    color: var(--color-dossier);
    letter-spacing: 0.12em;
    text-align: center;
}

.cipher-cell:hover .cipher-cell__label {
    color: var(--color-ink);
}

.cipher-room__whisper {
    text-align: center;
    font-family: var(--font-body);
    font-size: 0.75rem;
    letter-spacing: 0.36em;
    text-transform: uppercase;
    color: var(--color-dossier);
    margin-top: 1rem;
    min-height: 1.2em;
    transition: color 0.5s ease;
}

/* =========================================================
   Protocol Grid (inside Dossier IV)
   ========================================================= */

.protocol-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: clamp(1rem, 2vh, 1.5rem);
    margin-top: 0.5rem;
}

.protocol-item {
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 1.25rem;
    align-items: start;
    padding: 1.25rem 1.25rem 1.25rem 1rem;
    background: rgba(232, 228, 223, 0.35);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 1px solid rgba(184, 150, 62, 0.12);
    transition: var(--lift-transition);
}

.protocol-item:hover {
    transform: translateY(-2px);
    border-color: rgba(184, 150, 62, 0.3);
    box-shadow: 0 8px 24px rgba(28, 26, 23, 0.06);
}

.protocol-item__glyph {
    width: 48px;
    height: 48px;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.protocol-item:hover .protocol-item__glyph {
    transform: rotate(45deg);
}

.protocol-item__glyph svg {
    width: 100%;
    height: 100%;
    display: block;
}

.protocol-item__title {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-ink);
    line-height: 1.2;
    margin-bottom: 0.35rem;
}

.protocol-item__text {
    font-family: var(--font-body);
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--color-dossier);
}

/* =========================================================
   Register List (Dossier V)
   ========================================================= */

.register-list {
    list-style: none;
    counter-reset: entry;
    display: flex;
    flex-direction: column;
    gap: 0.9rem;
    padding: 0;
}

.register-list__row {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 1.25rem;
    align-items: baseline;
    padding: 0.75rem 0;
    border-bottom: 1px dashed rgba(184, 150, 62, 0.22);
    transition: var(--lift-transition);
}

.register-list__row:last-child {
    border-bottom: none;
}

.register-list__row:hover {
    transform: translateX(4px);
}

.register-list__time {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    color: var(--color-gold);
    font-size: 1.05rem;
    letter-spacing: 0.04em;
}

.register-list__body {
    font-family: var(--font-body);
    font-size: 0.98rem;
    line-height: 1.7;
    color: var(--color-ink);
}

/* =========================================================
   THE FROST CHAMBER — closing (inverted-ish / pure)
   ========================================================= */

.frost-chamber {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(3rem, 8vh, 6rem) 2rem;
    background: #FAF8F5;
    position: relative;
    overflow: hidden;
}

.frost-chamber::before {
    content: "";
    position: absolute;
    inset: 4vh 6vw;
    border: 1px solid var(--color-etch);
    pointer-events: none;
}

.frost-chamber::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 40%, rgba(232, 228, 223, 0.5) 100%);
    pointer-events: none;
}

.frost-chamber__inner {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: clamp(1.5rem, 3vh, 2.5rem);
    text-align: center;
    max-width: var(--content-max);
}

.frost-chamber__emblem {
    width: clamp(160px, 24vw, 240px);
    height: clamp(160px, 24vw, 240px);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--lift-transition);
    filter: drop-shadow(0 2px 8px rgba(184, 150, 62, 0.08));
}

.frost-chamber__emblem:hover {
    transform: translateY(-4px) scale(1.02);
    filter: drop-shadow(0 8px 14px rgba(184, 150, 62, 0.18));
}

.frost-chamber__emblem svg {
    width: 100%;
    height: 100%;
    animation: seal-rotate 240s linear infinite;
    transform-origin: 50% 50%;
}

.frost-chamber__closing {
    font-family: var(--font-display);
    font-size: clamp(1.6rem, 3.5vw, 2.6rem);
    font-weight: 400;
    font-style: italic;
    letter-spacing: 0.08em;
    color: var(--color-ink);
    line-height: 1.2;
}

.frost-chamber__stamp {
    font-family: var(--font-body);
    font-size: 0.78rem;
    letter-spacing: 0.36em;
    text-transform: uppercase;
    color: var(--color-dossier);
    display: inline-flex;
    gap: 0.8rem;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.frost-chamber__silence {
    font-family: var(--font-accent);
    font-style: italic;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--color-dossier);
    letter-spacing: 0.08em;
    margin-top: 1rem;
    opacity: 0.75;
}

/* =========================================================
   Responsive refinements
   ========================================================= */

@media (max-width: 720px) {
    :root {
        --content-max: 92vw;
        --section-gap: clamp(4rem, 10vh, 7rem);
    }

    .vestibule__communique {
        letter-spacing: 0.18em;
        line-height: 1.8;
    }

    .protocol-item {
        grid-template-columns: 44px 1fr;
        gap: 1rem;
    }

    .protocol-item__glyph {
        width: 40px;
        height: 40px;
    }

    .register-list__row {
        grid-template-columns: 56px 1fr;
        gap: 1rem;
    }

    .dossier__quote {
        padding: 1.25rem 1.25rem 1.25rem 1.75rem;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 1rem;
    }

    .cipher-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .vestibule__title {
        letter-spacing: 0.06em;
    }

    .frost-chamber__stamp {
        font-size: 0.7rem;
        letter-spacing: 0.28em;
    }
}

/* Reduce motion — keep stillness */
@media (prefers-reduced-motion: reduce) {
    .seal__ring,
    .frost-chamber__emblem svg,
    .scroll-arrow,
    .grain-overlay {
        animation: none !important;
    }

    * {
        transition-duration: 0.01ms !important;
    }
}