/* ============================================================
   FONT FACES
   ============================================================ */
@font-face {
    font-family: 'Black Mango';
    src: url('../fonts/black-mango-medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

/* ============================================================
   DESIGN TOKENS
   ============================================================ */
:root {
    /* ===== Theme inputs — overridden per [data-theme] (see THEMES section) ===== */
    --band:   #39111a;   /* header / footer / flipbook section backgrounds, button fills */
    --accent: #7a3b3f;   /* kickers, links, ornaments, hairline rules, #flipbook bleed */

    /* ===== Constants — never change with the theme ===== */
    --neutral-light: #eaeaeb;  /* light editorial surface (.intro-section bg, etc.) */
    --paper:         #ffffff;  /* the publication / brochure pages */
    --ink:           #1f1418;  /* body text on light surfaces */
    --ink-soft:      #5a4a4f;

    /* ===== Semantic, theme-aware — some overridden in [data-theme="zomer"] ===== */
    --heading-color: var(--band);     /* big headings/links on light surfaces; zomer -> var(--ink) */
    --accent-text:   var(--accent);   /* accent used as text/lines on light; zomer -> var(--ink-soft) */
    --on-band:       #eaeaeb;          /* brightest text/marks ON the band; zomer -> #2e1c0d */
    --on-light-fill: var(--ink);       /* dark text on a light fill (button hover) */
    --logo-filter:   none;             /* zomer -> brightness(0) to darken the white logo PNG */
    --pill-bg:       rgba(0, 0, 0, 0.28); /* the flipbook controls pill; zomer -> rgba(0,0,0,0.5) */

    /* ===== Derived — do NOT hand-edit per theme; these track --band / --accent / --on-band ===== */
    --surface-deep:      color-mix(in srgb, var(--band) 52%, #000);
    --tint-soft:         color-mix(in srgb, var(--band) 4%, transparent);
    --rule:              color-mix(in srgb, var(--band) 16%, transparent);
    --rule-strong:       color-mix(in srgb, var(--band) 32%, transparent);
    --on-band-strong:    color-mix(in srgb, var(--on-band) 92%, transparent);
    --on-band-mid:       color-mix(in srgb, var(--on-band) 68%, transparent);
    --on-band-soft:      color-mix(in srgb, var(--on-band) 45%, transparent);
    --rule-on-band:      color-mix(in srgb, var(--on-band) 24%, transparent);
    --rule-on-band-soft: color-mix(in srgb, var(--on-band) 10%, transparent);

    /* Always-light: text/marks/rules on the dark floating chrome (controls pill,
       lazy-render overlay) — these surfaces stay dark in every theme. */
    --on-chrome:           #eaeaeb;
    --rule-on-chrome:      color-mix(in srgb, var(--on-chrome) 24%, transparent);
    --rule-on-chrome-soft: color-mix(in srgb, var(--on-chrome) 10%, transparent);

    /* Type families */
    --font-display: 'Black Mango', Georgia, 'Times New Roman', serif;
    --font-body: 'Effra', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

    /* Type scale (clamped for fluid sizing) */
    --fs-display-xl: clamp(2.75rem, 5.5vw, 4.5rem);
    --fs-display-l:  clamp(2rem, 3.5vw, 2.75rem);
    --fs-display-m:  clamp(1.5rem, 2.4vw, 2rem);
    --fs-lede:       clamp(1.0625rem, 1.4vw, 1.3125rem);
    --fs-pull:       clamp(1.25rem, 2vw, 1.625rem);
    --fs-body-l:     1.0625rem;
    --fs-body:       1rem;
    --fs-caption:    0.8125rem;
    --fs-eyebrow:    0.6875rem;

    /* Tracking */
    --tracking-eyebrow: 0.22em;
    --tracking-tagline: 0.18em;
    --tracking-display: -0.015em;

    /* Spacing rhythm */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.5rem;
    --space-6: 2rem;
    --space-7: 3rem;
    --space-8: 4rem;
    --space-9: 6rem;
    --space-10: 8rem;
}

/* ============================================================
   THEMES
   Each [data-theme] sets the two inputs. "zomer" also overrides
   the light-surface fallbacks: #ffa06a / #ffd5a1 are too light to
   carry text on white, so headings/accents become dark ink, the
   logo PNG is rendered dark, on-band text flips dark, and the
   controls pill is darkened so light overlays still read.
   ============================================================ */
[data-theme="hoofd"]  { --band: #39111a; --accent: #7a3b3f; }
[data-theme="lente"]  { --band: #5c6f52; --accent: #98b783; }
[data-theme="herfst"] { --band: #7a402e; --accent: #d49e68; }
[data-theme="winter"] { --band: #334a5d; --accent: #5c89a6; }

[data-theme="zomer"] {
    --band:   #ffa06a;
    --accent: #ffd5a1;
    --heading-color: var(--ink);
    --accent-text:   var(--ink-soft);
    --on-band:       #2e1c0d;
    --logo-filter:   brightness(0);
    --pill-bg:       rgba(0, 0, 0, 0.5);
    --surface-deep:  #1a0f07; /* near-black warm brown so light/dark overlays both read */
    --on-band-soft: color-mix(in srgb, var(--on-band) 62%, transparent);
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

html {
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--ink);
    background-color: var(--surface-deep);
    background-image:
        radial-gradient(ellipse 80% 40% at 50% 0%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 65%),
        radial-gradient(ellipse 70% 60% at 50% 100%, color-mix(in srgb, var(--band) 55%, transparent), transparent 65%),
        url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1, 0 0 0 0 0.95, 0 0 0 0 0.9, 0 0 0 0.05 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
    background-attachment: fixed, fixed, fixed;
    background-repeat: no-repeat, no-repeat, repeat;
    min-height: 100vh;
    padding: clamp(0.5rem, 2vw, 2rem);
}

::selection {
    background: var(--band);
    color: var(--on-band);
}

:focus-visible {
    outline: 2px solid var(--accent-text);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ============================================================
   CONTAINER (the publication)
   ============================================================ */
.container {
    max-width: 1320px;
    margin: 0 auto;
    background: var(--paper);
    border-radius: 4px;
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.04),
        0 30px 80px -10px rgba(0, 0, 0, 0.55),
        0 60px 160px -40px rgba(0, 0, 0, 0.45);
    overflow: hidden;
    position: relative;
}

/* ============================================================
   HEADER / MASTHEAD
   ============================================================ */
.header {
    position: relative;
    background: var(--band);
    padding: clamp(1.75rem, 3.5vw, 2.75rem) clamp(1.5rem, 3vw, 2.5rem) clamp(1.5rem, 3vw, 2.25rem);
    text-align: center;
    color: var(--on-band);
    overflow: hidden;
}

.header::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 60% 90% at 50% 0%, color-mix(in srgb, var(--accent) 55%, transparent), transparent 70%);
    pointer-events: none;
}

.header > * {
    position: relative;
}

.header-rule {
    display: block;
    width: 28px;
    height: 1px;
    background: var(--rule-on-band);
    margin: 0 auto var(--space-5);
}

.logo {
    max-height: 72px;
    width: auto;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: var(--logo-filter);          /* dark in [data-theme="zomer"], none otherwise */
    transition: filter 0.3s ease;
}

.header-tagline {
    margin-top: var(--space-5);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-tagline);
    text-transform: uppercase;
    color: var(--on-band-mid);
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.7em;
}

.header-tagline-dot {
    color: var(--on-band-soft);
    transform: translateY(-1px);
}

/* ============================================================
   INTRO / EDITORIAL
   ============================================================ */
.intro-section {
    background: var(--neutral-light);
    background-image:
        radial-gradient(ellipse 70% 50% at 50% 0%, var(--tint-soft), transparent 60%);
    padding: clamp(3rem, 6vw, 5.5rem) clamp(1.5rem, 4vw, 3.5rem) clamp(3.5rem, 7vw, 6rem);
    border-bottom: 1px solid var(--rule);
    position: relative;
}

.intro-content {
    max-width: 1080px;
    margin: 0 auto;
}

.intro-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
    color: var(--heading-color);
}

.kicker {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--accent-text);
    display: inline-block;
}

.kicker-light {
    color: var(--on-band-mid);
}

.ornament {
    display: inline-flex;
    color: var(--accent-text);
    opacity: 0.65;
}

.intro-heading {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: var(--fs-display-xl);
    line-height: 1;
    letter-spacing: var(--tracking-display);
    color: var(--heading-color);
    text-align: center;
    margin-bottom: var(--space-5);
}

.intro-lede {
    font-family: var(--font-body);
    font-weight: 300;
    font-style: italic;
    font-size: var(--fs-lede);
    line-height: 1.5;
    color: var(--ink);
    text-align: center;
    max-width: 36em;
    margin: 0 auto var(--space-8);
}

.intro-body {
    display: grid;
    grid-template-columns: minmax(180px, 1fr) minmax(0, 2.5fr);
    gap: clamp(2rem, 4vw, 4rem);
    align-items: start;
}

.intro-image {
    position: sticky;
    top: var(--space-6);
    text-align: center;
}

.portrait-frame {
    position: relative;
    display: inline-block;
    padding: 6px;
    border-radius: 50%;
    background: var(--paper);
    box-shadow:
        0 0 0 1px var(--rule),
        0 16px 36px -10px color-mix(in srgb, var(--band) 28%, transparent);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.portrait-frame::after {
    content: "";
    position: absolute;
    inset: 14px;
    border-radius: 50%;
    border: 1px solid var(--rule-strong);
    pointer-events: none;
}

.portrait-frame:hover {
    transform: translateY(-2px);
    box-shadow:
        0 0 0 1px var(--rule-strong),
        0 22px 48px -10px color-mix(in srgb, var(--band) 32%, transparent);
}

.intro-photo {
    width: clamp(150px, 14vw, 190px);
    height: clamp(150px, 14vw, 190px);
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.portrait-caption {
    margin-top: var(--space-4);
    line-height: 1.4;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.portrait-name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.375rem;
    color: var(--heading-color);
    letter-spacing: 0.01em;
}

.portrait-role {
    font-family: var(--font-body);
    font-size: var(--fs-eyebrow);
    font-weight: 500;
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--accent-text);
    margin-top: 4px;
}

.intro-text {
    color: var(--ink);
}

.intro-text p {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: var(--fs-body-l);
    line-height: 1.75;
    color: var(--ink-soft);
    margin-bottom: var(--space-5);
}

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

.intro-paragraph--first::first-letter {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 3.6em;
    line-height: 0.85;
    color: var(--heading-color);
    float: left;
    margin: 0.08em 0.12em -0.08em -0.04em;
}

.intro-text a {
    color: var(--heading-color);
    text-decoration: none;
    border-bottom: 1px solid var(--rule-strong);
    padding-bottom: 1px;
    transition: border-color 0.25s ease, color 0.25s ease;
}

.intro-text a:hover,
.intro-text a:focus-visible {
    color: var(--accent-text);
    border-bottom-color: var(--accent-text);
}

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

.pull-quote {
    margin: var(--space-7) 0;
    padding: var(--space-2) 0 var(--space-2) var(--space-6);
    border-left: 2px solid var(--heading-color);
    font-family: var(--font-display);
    font-weight: 500;
    font-style: normal;
    font-size: var(--fs-pull);
    line-height: 1.35;
    color: var(--heading-color);
    letter-spacing: 0;
}

.pull-quote-mark {
    font-family: var(--font-display);
    color: var(--accent-text);
    font-size: 1.6em;
    line-height: 0;
    margin-right: 0.05em;
    vertical-align: -0.32em;
    opacity: 0.55;
}

.signature {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display) !important;
    font-size: 1.25rem !important;
    color: var(--heading-color) !important;
    margin-top: var(--space-6) !important;
}

.signature-mark {
    display: inline-block;
    width: 32px;
    height: 1px;
    background: var(--accent-text);
    flex-shrink: 0;
}

/* ============================================================
   FLIPBOOK SECTION
   ============================================================ */
.flipbook-section {
    background: var(--band);
    background-image:
        radial-gradient(ellipse 90% 60% at 50% 0%, color-mix(in srgb, var(--accent) 32%, transparent), transparent 70%),
        radial-gradient(ellipse 70% 50% at 50% 100%, rgba(0, 0, 0, 0.35), transparent 65%);
    padding: clamp(2.75rem, 5vw, 4.5rem) clamp(1.25rem, 3vw, 2.5rem);
    color: var(--on-band);
    position: relative;
    display: block;
}

.flipbook-header {
    text-align: center;
    margin-bottom: clamp(2rem, 4vw, 3rem);
    color: var(--on-band);
}

.flipbook-header .kicker {
    color: var(--on-band-mid);
    margin-bottom: var(--space-3);
}

.flipbook-title {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: var(--fs-display-l);
    line-height: 1.1;
    letter-spacing: var(--tracking-display);
    color: var(--on-band);
    margin-bottom: var(--space-3);
}

.flipbook-subtitle {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: var(--fs-body-l);
    line-height: 1.55;
    color: var(--on-band-mid);
    max-width: 32em;
    margin: 0 auto;
    font-style: italic;
}

#flipbook-container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    position: relative;
}

/* ----- Loading state ----- */
#loading-indicator {
    text-align: center;
    color: var(--on-band);
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
    padding: var(--space-9) 0 var(--space-8);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.loading-mark {
    display: inline-flex;
    color: var(--on-band-soft);
    margin-bottom: var(--space-4);
}

.loading-label {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--on-band-mid);
    margin-bottom: var(--space-5);
}

#progress-bar-container {
    width: 100%;
    height: 2px;
    background: var(--rule-on-band-soft);
    margin: 0 auto;
    overflow: hidden;
    position: relative;
}

#progress-bar {
    height: 100%;
    background: var(--on-band);
    width: 0% !important;
    min-width: 0%;
    transition: width 0.45s cubic-bezier(0.22, 0.61, 0.36, 1);
    display: block !important;
    visibility: visible !important;
}

#loading-percentage {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 2.25rem;
    line-height: 1;
    color: var(--on-band);
    margin-top: var(--space-5);
    letter-spacing: -0.01em;
}

/* ----- Flipbook frame ----- */
#flipbook {
    position: relative;
    width: 100%;
    margin: 0 auto;
    perspective: 2000px;
    background: var(--accent);
    border-radius: 2px;
    box-shadow:
        0 0 0 1px var(--rule-on-band-soft),
        0 30px 60px -10px rgba(0, 0, 0, 0.55),
        0 60px 120px -30px rgba(0, 0, 0, 0.4);
    overflow: hidden;
}

.spread {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
    display: none;
    transform-style: preserve-3d;
    backface-visibility: hidden;
    will-change: transform, opacity;
}

/* Spread entry (gebruikt voor initiële weergave en meer-dan-1 sprongen) */
.spread--enter-initial {
    animation: spread-fade-in 0.4s ease both;
}

@keyframes spread-fade-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ----- Realistische bladwissel (flip layer, opgebouwd in script.js) ----- */
.flip-layer {
    position: absolute;
    inset: 0;
    z-index: 50;
    perspective: 2000px;
    pointer-events: none;
    background: var(--accent);
}

.flip-base {
    position: absolute;
    top: 0;
    height: 100%;
    width: 50%;
    overflow: hidden;
}
.flip-base-left  { left: 0; }
.flip-base-right { right: 0; }
.flip-base canvas { width: 100%; height: 100%; display: block; }

.flip-leaf {
    position: absolute;
    top: 0;
    height: 100%;
    width: 50%;
    transform-style: preserve-3d;
    will-change: transform;
}
.flip-leaf-next { left: 50%; transform-origin: left center; }
.flip-leaf-prev { left: 0;   transform-origin: right center; }

.leaf-face {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    overflow: hidden;
    background: var(--paper, #ffffff);
}
.leaf-face canvas { width: 100%; height: 100%; display: block; }
.leaf-front { transform: rotateY(0deg); }
.leaf-back  { transform: rotateY(180deg); }

/* Schaduw/curl-suggestie per blad-vlak */
.leaf-shade {
    position: absolute;
    inset: 0;
    pointer-events: none;
    opacity: 0;
}
.leaf-front .leaf-shade {
    background: linear-gradient(to right, rgba(0,0,0,0) 60%, rgba(0,0,0,0.35) 100%);
}
.leaf-back .leaf-shade {
    background: linear-gradient(to left, rgba(0,0,0,0) 60%, rgba(0,0,0,0.35) 100%);
}

/* Animaties starten zodra .flip-layer--run wordt toegevoegd */
.flip-layer--run .flip-leaf-next { animation: leaf-flip-next 0.75s cubic-bezier(0.33, 0, 0.2, 1) forwards; }
.flip-layer--run .flip-leaf-prev { animation: leaf-flip-prev 0.75s cubic-bezier(0.33, 0, 0.2, 1) forwards; }
.flip-layer--run .leaf-front .leaf-shade { animation: leaf-shade-front 0.75s ease-in forwards; }
.flip-layer--run .leaf-back  .leaf-shade { animation: leaf-shade-back  0.75s ease-out forwards; }

@keyframes leaf-flip-next {
    from { transform: rotateY(0deg); }
    to   { transform: rotateY(-180deg); }
}
@keyframes leaf-flip-prev {
    from { transform: rotateY(0deg); }
    to   { transform: rotateY(180deg); }
}
@keyframes leaf-shade-front { from { opacity: 0; }    to { opacity: 0.45; } }
@keyframes leaf-shade-back  { from { opacity: 0.45; } to { opacity: 0; } }

.page {
    position: absolute;
    top: 0;
    width: 50%;
    height: 100%;
    background: var(--paper);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.page:hover {
    box-shadow: 0 4px 22px rgba(0, 0, 0, 0.22);
}

.page.left {
    left: 0;
    right: 50%;
    border-right: 1px solid color-mix(in srgb, var(--band) 18%, transparent);
}

.page.right {
    left: 50%;
    right: 0;
    border-left: 1px solid color-mix(in srgb, var(--band) 18%, transparent);
}

.page canvas {
    width: 100% !important;
    height: 100% !important;
    object-fit: contain;
    display: block;
    max-width: 100%;
}

/* ----- Controls (toolbar pill) ----- */
.flipbook-controls {
    /* JS sets display: flex when ready */
    justify-content: center;
    align-items: center;
    gap: clamp(0.5rem, 1.5vw, 1rem);
    margin: clamp(2rem, 4vw, 3rem) auto 0;
    padding: var(--space-3) var(--space-4);
    background: var(--pill-bg);
    border: 1px solid var(--rule-on-chrome-soft);
    border-radius: 999px;
    width: max-content;
    max-width: 100%;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
}

.control-btn {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    padding: 0.85rem 1.4rem;
    color: var(--on-chrome);
    background: transparent;
    border: 1px solid var(--rule-on-chrome);
    border-radius: 999px;
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    line-height: 1;
}

.control-btn-arrow {
    font-size: 1.15em;
    line-height: 1;
    transition: transform 0.25s ease;
    color: inherit;
}

.control-btn:hover:not(:disabled) {
    background: var(--neutral-light);
    color: var(--on-light-fill);
    border-color: var(--neutral-light);
}

.control-btn--prev:hover:not(:disabled) .control-btn-arrow {
    transform: translateX(-3px);
}

.control-btn--next:hover:not(:disabled) .control-btn-arrow {
    transform: translateX(3px);
}

.control-btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 2px var(--surface-deep), 0 0 0 4px var(--neutral-light);
}

.control-btn:disabled {
    opacity: 0.32;
    cursor: not-allowed;
}

.page-selector {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    padding: 0.85rem 2.25rem 0.85rem 1.25rem;
    border: 1px solid var(--rule-on-chrome);
    border-radius: 999px;
    background-color: transparent;
    color: var(--on-chrome);
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, color 0.3s ease;
    min-width: 170px;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6' fill='none'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%23eaeaeb' stroke-width='1.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    line-height: 1;
}

.page-selector:hover {
    background-color: color-mix(in srgb, var(--on-chrome) 8%, transparent);
    border-color: color-mix(in srgb, var(--on-chrome) 42%, transparent);
}

.page-selector:focus-visible {
    outline: none;
    border-color: var(--on-chrome);
    box-shadow: 0 0 0 2px var(--surface-deep), 0 0 0 4px var(--neutral-light);
}

.page-selector option {
    background: var(--band);
    color: var(--on-band);
    padding: 10px;
    text-transform: none;
    letter-spacing: 0;
    font-size: 0.9rem;
}

/* ============================================================
   DOWNLOAD SECTION
   ============================================================ */
.download-section {
    text-align: center;
    padding: clamp(2rem, 4vw, 3rem) 0 var(--space-3);
    margin-top: clamp(2rem, 4vw, 3rem);
    position: relative;
}

.download-divider {
    display: block;
    width: 40px;
    height: 1px;
    background: var(--rule-on-band);
    margin: 0 auto var(--space-5);
}

.download-prompt {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--on-band-mid);
    margin-bottom: var(--space-5);
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    padding: 1rem 2rem;
    color: var(--on-band);
    background: transparent;
    border: 1px solid var(--on-band);
    border-radius: 999px;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.25s ease, color 0.25s ease, border-color 0.3s ease;
    line-height: 1;
}

.download-btn:hover,
.download-btn:focus-visible {
    background: var(--neutral-light);
    color: var(--on-light-fill);
    text-decoration: none;
    outline: none;
}

.download-btn:focus-visible {
    box-shadow: 0 0 0 2px var(--surface-deep), 0 0 0 4px var(--neutral-light);
}

.download-icon {
    font-size: 1.1em;
    line-height: 1;
    transition: transform 0.25s ease;
}

.download-btn:hover .download-icon,
.download-btn:focus-visible .download-icon {
    transform: translateY(2px);
}

/* ============================================================
   MOBILE SECTION
   ============================================================ */
.mobile-section {
    padding: clamp(3rem, 8vw, 5rem) clamp(1.25rem, 4vw, 2.5rem);
    background: var(--band);
    background-image:
        radial-gradient(ellipse 80% 60% at 50% 0%, color-mix(in srgb, var(--accent) 32%, transparent), transparent 70%);
    text-align: center;
    color: var(--on-band);
}

.mobile-message {
    max-width: 32em;
    margin: 0 auto var(--space-7);
    color: var(--on-band);
}

.mobile-message .kicker {
    color: var(--on-band-mid);
    margin-bottom: var(--space-4);
}

.mobile-message h3 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: var(--fs-display-l);
    line-height: 1.15;
    letter-spacing: var(--tracking-display);
    margin-bottom: var(--space-4);
    color: var(--on-band);
}

.mobile-message p {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: var(--fs-body-l);
    line-height: 1.65;
    color: var(--on-band-mid);
}

.mobile-download {
    padding: var(--space-3) 0;
}

.mobile-download-btn {
    padding: 1.1rem 2.25rem;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--band);
    background-image:
        radial-gradient(ellipse 80% 50% at 50% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%);
    color: var(--on-band);
    padding: clamp(3.5rem, 7vw, 5.5rem) clamp(1.5rem, 4vw, 3rem) clamp(2.5rem, 4vw, 3.5rem);
}

.footer-inner {
    max-width: 980px;
    margin: 0 auto;
    text-align: center;
}

.footer-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-5);
    margin-bottom: var(--space-3);
}

.footer-rule {
    flex: 0 1 90px;
    height: 1px;
    background: var(--rule-on-band);
}

.footer-monogram {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 1.625rem;
    letter-spacing: 0.06em;
    color: var(--on-band);
}

.footer-tagline {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-tagline);
    text-transform: uppercase;
    color: var(--on-band-soft);
    margin-bottom: var(--space-9);
}

.contact-info {
    text-align: center;
}

.contact-info h3 {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: var(--fs-display-m);
    color: var(--on-band);
    margin-bottom: var(--space-4);
    letter-spacing: var(--tracking-display);
}

.contact-intro {
    font-family: var(--font-body);
    font-weight: 300;
    font-style: italic;
    font-size: var(--fs-body);
    line-height: 1.6;
    color: var(--on-band-mid);
    margin: 0 auto var(--space-8);
    max-width: 30em;
}

.contact-details {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(2rem, 4vw, 3.5rem);
    margin-top: var(--space-6);
    padding-top: var(--space-7);
    border-top: 1px solid var(--rule-on-band-soft);
    text-align: left;
}

.contact-item {
    text-align: left;
}

.contact-item h4 {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--on-band-mid);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-3);
    border-bottom: 1px solid var(--rule-on-band-soft);
}

.contact-item .address {
    font-family: var(--font-body);
    font-weight: 300;
    font-style: normal;
    font-size: var(--fs-body);
    line-height: 1.7;
    color: var(--on-band-strong);
    margin: 0;
}

.contact-link {
    font-family: var(--font-body);
    font-weight: 300;
    font-size: var(--fs-body);
    line-height: 1.7;
    color: var(--on-band-strong);
    margin: 0 0 var(--space-2);
    display: flex;
    align-items: baseline;
    gap: var(--space-3);
}

.contact-link:last-child {
    margin-bottom: 0;
}

.contact-link--single {
    display: block;
}

.contact-label {
    display: inline-block;
    width: 14px;
    font-family: var(--font-display);
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--on-band-mid);
    flex-shrink: 0;
    text-align: left;
}

.contact-info a {
    color: var(--on-band);
    text-decoration: none;
    border-bottom: 1px solid var(--rule-on-band);
    padding-bottom: 1px;
    transition: border-color 0.25s ease, color 0.25s ease;
}

.contact-info a:hover,
.contact-info a:focus-visible {
    color: var(--on-band);
    border-bottom-color: var(--on-band);
}

.email-obfuscated {
    font-style: italic;
    opacity: 0.65;
}

.footer-copyright {
    margin-top: var(--space-9);
    padding-top: var(--space-5);
    border-top: 1px solid var(--rule-on-band-soft);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-tagline);
    text-transform: uppercase;
    color: var(--on-band-soft);
}

/* ============================================================
   LAZY LOADING / SPINNER
   ============================================================ */
.lazy-loading-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 1000;
    background: color-mix(in srgb, var(--surface-deep) 85%, transparent);
    color: var(--on-chrome);
    padding: var(--space-5) var(--space-6);
    border: 1px solid var(--rule-on-chrome);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: var(--fs-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    pointer-events: none;
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.lazy-loading-indicator p {
    margin: 0;
    color: var(--on-chrome);
}

.spinner {
    width: 22px;
    height: 22px;
    border: 1.5px solid var(--rule-on-chrome);
    border-top-color: var(--neutral-light);
    border-radius: 50%;
    animation: spin 0.9s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 900px) {
    .intro-body {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }

    .intro-image {
        position: static;
    }

    .intro-text {
        text-align: left;
    }

    .intro-paragraph--first::first-letter {
        float: none;
        font-size: 1em;
        line-height: inherit;
        margin: 0;
        color: inherit;
    }

    .pull-quote {
        margin: var(--space-6) 0;
        padding-left: var(--space-5);
    }

    .signature {
        justify-content: flex-start;
    }
}

@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .container {
        border-radius: 0;
        box-shadow: none;
    }

    .flipbook-section {
        display: none;
    }

    .mobile-section {
        display: block !important;
    }

    .contact-details {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }

    .contact-item,
    .contact-item h4 {
        text-align: center;
    }

    .contact-link {
        justify-content: center;
    }

    .footer {
        padding: clamp(3rem, 8vw, 4rem) 1.25rem 2rem;
    }

    .footer-rule {
        flex-basis: 50px;
    }

    .logo {
        max-height: 56px;
    }

    .header-tagline {
        font-size: 0.625rem;
        gap: 0.5em;
    }

    .intro-photo {
        width: 140px;
        height: 140px;
    }

    .pull-quote {
        font-size: 1.25rem;
    }

    .download-btn,
    .control-btn,
    .page-selector {
        font-size: 0.625rem;
    }

    .control-btn-label {
        display: none;
    }

    .control-btn {
        padding: 0.85rem 1rem;
    }

    .page-selector {
        min-width: 140px;
    }

    .flipbook-controls {
        padding: var(--space-3);
        gap: var(--space-2);
    }
}

@media (max-width: 480px) {
    .header {
        padding: 1.5rem 1rem;
    }

    .footer-mark {
        gap: var(--space-3);
    }

    .footer-monogram {
        font-size: 1.25rem;
    }

    .intro-section {
        padding-left: 1.25rem;
        padding-right: 1.25rem;
    }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================================
   THEME SWITCHER
   A small editorial control that floats in the bottom-left corner of
   the viewport — reads like a colophon mark on the publication.
   ============================================================ */
.theme-switcher {
    position: fixed;
    /* clear the iOS home indicator / notch when present */
    bottom: calc(clamp(0.85rem, 1.8vw, 1.6rem) + env(safe-area-inset-bottom, 0px));
    left: calc(clamp(0.85rem, 1.8vw, 1.6rem) + env(safe-area-inset-left, 0px));
    z-index: 1100;
    display: flex;
    flex-direction: column-reverse;   /* toggle sits at the bottom; the panel opens upward */
    align-items: flex-start;
    gap: 0.45rem;
    font-family: var(--font-body);
}

/* The seal — a split disc: left half --band, right half --accent
   (the gradient is painted inline by theme.js). */
.theme-chip {
    flex-shrink: 0;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    box-shadow:
        inset 0 1px 1.5px rgba(255, 255, 255, 0.45),
        inset 0 -2.5px 3.5px rgba(0, 0, 0, 0.28),
        0 0 0 1px rgba(0, 0, 0, 0.14),
        0 1px 2px rgba(0, 0, 0, 0.2);
}

/* The toggle — [seal] | THEMA / <name in display serif> | chevron */
.theme-switcher-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.5rem 0.7rem 0.5rem 0.6rem;
    background: var(--paper);
    color: var(--ink);
    border: 1px solid var(--rule-strong);
    border-radius: 2px;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 10px 26px -14px rgba(0, 0, 0, 0.5),
        0 2px 5px -2px rgba(0, 0, 0, 0.16);
    cursor: pointer;
    line-height: 1;
    transition: border-color 0.3s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.theme-switcher-toggle:hover {
    transform: translateY(-1px);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 16px 32px -14px rgba(0, 0, 0, 0.55),
        0 3px 7px -2px rgba(0, 0, 0, 0.18);
}

.theme-switcher-label {
    display: inline-flex;
    flex-direction: column;
    gap: 0.18rem;
    border-left: 1px solid var(--rule);
    padding-left: 0.55rem;
}

.theme-switcher-eyebrow {
    font-family: var(--font-body);
    font-size: 0.5625rem;
    font-weight: 500;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ink-soft);
    line-height: 1;
}

.theme-switcher-name {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: 0.005em;
    color: var(--ink);
    line-height: 1;
    white-space: nowrap;
}

.theme-switcher-caret {
    font-size: 0.55rem;
    color: var(--ink-soft);
    opacity: 0.6;
    line-height: 1;
    margin-left: 0.05rem;
    transition: transform 0.3s ease;
}

.theme-switcher[data-open="true"] .theme-switcher-caret {
    transform: rotate(180deg);
}

/* The panel */
.theme-switcher-list {
    display: flex;
    flex-direction: column;
    padding: 0.7rem 0.4rem 0.5rem;
    background: var(--paper);
    border: 1px solid var(--rule-strong);
    border-radius: 3px;
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.7),
        0 22px 48px -16px rgba(0, 0, 0, 0.45),
        0 6px 16px -6px rgba(0, 0, 0, 0.2);
    min-width: 188px;
}

.theme-switcher-list[hidden] { display: none; }

.theme-switcher[data-open="true"] .theme-switcher-list {
    animation: ts-panel-in 0.16s ease both;
}

.theme-switcher-list::before {
    content: "Thema";
    display: block;
    font-family: var(--font-body);
    font-size: 0.5625rem;
    font-weight: 500;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--ink-soft);
    padding: 0 0.6rem 0.5rem;
    margin-bottom: 0.35rem;
    border-bottom: 1px solid var(--rule);
}

.theme-switcher-item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    width: 100%;
    padding: 0.45rem 0.6rem;
    background: transparent;
    border: 0;
    border-radius: 2px;
    cursor: pointer;
    text-align: left;
    color: var(--ink-soft);
    transition: background-color 0.18s ease, color 0.18s ease;
}

.theme-switcher[data-open="true"] .theme-switcher-item {
    animation: ts-item-in 0.3s cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(1) { animation-delay: 0.03s; }
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(2) { animation-delay: 0.06s; }
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(3) { animation-delay: 0.09s; }
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(4) { animation-delay: 0.12s; }
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(5) { animation-delay: 0.15s; }
.theme-switcher[data-open="true"] .theme-switcher-item:nth-child(6) { animation-delay: 0.18s; }

.theme-switcher-itemlabel {
    font-family: var(--font-display);
    font-weight: 500;
    font-size: 0.9375rem;
    letter-spacing: 0.005em;
    line-height: 1;
}

.theme-switcher-item:hover {
    background-color: var(--neutral-light);
    color: var(--ink);
}

.theme-switcher-item.is-active {
    color: var(--ink);
    background-color: color-mix(in srgb, var(--accent) 12%, transparent);
}

.theme-switcher-item.is-active .theme-chip {
    box-shadow:
        inset 0 1px 1.5px rgba(255, 255, 255, 0.45),
        inset 0 -2.5px 3.5px rgba(0, 0, 0, 0.28),
        0 0 0 1px var(--accent-text),
        0 1px 2px rgba(0, 0, 0, 0.2);
}

/* a small diamond ornament on the active entry — echoes the
   site's flourish (the SVG diamond in .ornament) */
.theme-switcher-item.is-active::after {
    content: "";
    flex-shrink: 0;
    width: 4px;
    height: 4px;
    margin-left: auto;
    transform: rotate(45deg);
    background: var(--accent-text);
}

.theme-switcher-toggle:focus-visible,
.theme-switcher-item:focus-visible {
    outline: 2px solid var(--accent-text);
    outline-offset: 2px;
}

@keyframes ts-panel-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

@keyframes ts-item-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
    .theme-switcher-label { display: none; }
    /* roomier finger target on phones */
    .theme-switcher-toggle { padding: 0.8rem 0.85rem; gap: 0.45rem; }
}