/* ============================================
   FK NOBEL — Presentation Catalog
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@300;400;500;700;900&family=Cairo:wght@400;700;900&display=swap');

:root {
  --cream: #F5EFE6;
  --paper: #FAF6EF;
  --cream-deep: #EDE4D3;
  --walnut: #4A2E1F;
  --walnut-deep: #3A2415;
  --bronze: #A67B47;
  --gold: #C9A86A;
  --charcoal: #1A1714;
  --ink: #2A2520;
  --line: rgba(74, 46, 31, 0.18);
  --line-soft: rgba(74, 46, 31, 0.08);

  --display: 'Cairo', 'Tajawal', 'Helvetica Neue', sans-serif;
  --body: 'Tajawal', 'Inter', -apple-system, sans-serif;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);

  --page-w: 210mm;
  --page-h: 297mm;
}

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

html { -webkit-font-smoothing: antialiased; scroll-behavior: smooth; }

body {
  font-family: var(--body);
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--paper);
  overflow-x: hidden;
}

[dir="rtl"] body { font-family: var(--body); }

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }

::selection { background: var(--walnut); color: var(--cream); }

/* ============================================
   SPLASH — 2 CHOICES
   ============================================ */
.splash {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  position: relative;
  overflow: hidden;
}

.splash-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 32px 48px;
  position: relative;
  z-index: 5;
}

.splash-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.splash-brand img {
  height: 36px;
}
.splash-meta {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--walnut);
  opacity: 0.7;
}

/* Hero title */
.splash-title-wrap {
  text-align: center;
  padding: 60px 24px 40px;
  position: relative;
  z-index: 2;
}
.splash-eyebrow {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--bronze);
  margin-bottom: 20px;
  text-transform: uppercase;
}
.splash-title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(48px, 9vw, 128px);
  line-height: 0.9;
  color: var(--walnut);
  letter-spacing: -0.02em;
}
.splash-title .accent {
  display: inline-block;
  position: relative;
  color: var(--bronze);
}
.splash-sub {
  margin-top: 22px;
  font-family: var(--body);
  font-size: clamp(15px, 1.6vw, 19px);
  font-weight: 400;
  color: var(--ink);
  opacity: 0.75;
  max-width: 50ch;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* Choice cards */
.splash-choices {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  padding: 20px 48px 48px;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

.choice {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: clamp(380px, 55vh, 560px);
  padding: 40px;
  border-radius: 4px;
  overflow: hidden;
  cursor: pointer;
  background: var(--walnut);
  color: var(--cream);
  transition: transform 0.6s var(--ease), box-shadow 0.6s var(--ease);
  text-decoration: none;
}
.choice:hover {
  transform: translateY(-6px);
  box-shadow: 0 40px 80px -30px rgba(74, 46, 31, 0.5);
}

.choice-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 1.2s var(--ease);
  filter: saturate(0.95);
}
.choice:hover .choice-bg { transform: scale(1.05); }

.choice-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(58, 36, 21, 0.92) 0%,
    rgba(58, 36, 21, 0.55) 45%,
    rgba(58, 36, 21, 0.15) 100%
  );
  transition: opacity 0.4s var(--ease);
}

.choice-content {
  position: relative;
  z-index: 2;
}

.choice-num {
  font-family: var(--display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--gold);
  margin-bottom: 14px;
}

.choice-title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(36px, 5vw, 64px);
  line-height: 1;
  color: var(--cream);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.choice-desc {
  font-size: 15px;
  line-height: 1.6;
  color: rgba(245, 239, 230, 0.85);
  max-width: 38ch;
  margin-bottom: 28px;
  font-weight: 400;
}

.choice-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  background: var(--cream);
  color: var(--walnut);
  border-radius: 999px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: background 0.3s var(--ease), gap 0.3s var(--ease);
}
.choice-cta svg { transition: transform 0.3s var(--ease); }
.choice:hover .choice-cta {
  background: var(--gold);
  gap: 16px;
}
[dir="rtl"] .choice-cta svg { transform: scaleX(-1); }
[dir="rtl"] .choice:hover .choice-cta svg { transform: scaleX(-1) translateX(-4px); }

.splash-foot {
  text-align: center;
  padding: 24px 48px 40px;
  font-family: var(--display);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.3em;
  color: var(--walnut);
  opacity: 0.5;
}

/* ============================================
   READER (catalog viewer)
   ============================================ */
.reader-stage {
  background: var(--cream-deep);
  min-height: 100vh;
  padding: 100px 0 80px;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(255,255,255,0.5) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(166, 123, 71, 0.06) 0%, transparent 50%);
}

/* Top bar — fixed, floating */
.reader-bar {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 14px 10px 22px;
  background: rgba(250, 246, 239, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--line);
  border-radius: 999px;
  box-shadow: 0 12px 32px -10px rgba(74, 46, 31, 0.25);
}

.reader-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--display);
  font-weight: 700;
  font-size: 13px;
  color: var(--walnut);
  transition: opacity 0.2s var(--ease);
}
.reader-back:hover { opacity: 0.65; }
[dir="rtl"] .reader-back svg { transform: scaleX(-1); }

.reader-bar-divider {
  width: 1px;
  height: 22px;
  background: var(--line);
}

.reader-title {
  font-family: var(--display);
  font-weight: 900;
  font-size: 15px;
  color: var(--walnut);
  letter-spacing: -0.005em;
}

.reader-counter {
  font-family: var(--display);
  font-weight: 500;
  font-size: 13px;
  color: var(--walnut);
  opacity: 0.7;
  min-width: 56px;
  text-align: center;
  direction: ltr;
}
.reader-counter strong {
  font-weight: 900;
  opacity: 1;
  color: var(--walnut);
}

.reader-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--walnut);
  background: transparent;
  transition: background 0.3s var(--ease), color 0.3s var(--ease), opacity 0.3s var(--ease);
  border: 1px solid transparent;
}
.reader-icon-btn:hover {
  background: var(--walnut);
  color: var(--cream);
}
.reader-icon-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.reader-icon-btn:disabled:hover {
  background: transparent;
  color: var(--walnut);
}
[dir="rtl"] .reader-icon-btn svg { transform: scaleX(-1); }

/* Floating side arrows (large, more discoverable) */
.reader-arrow {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--walnut);
  color: var(--cream);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  z-index: 40;
  box-shadow: 0 16px 32px -8px rgba(74, 46, 31, 0.4);
  transition: all 0.3s var(--ease);
}
.reader-arrow:hover {
  background: var(--walnut-deep);
  transform: translateY(-50%) scale(1.08);
}
.reader-arrow:disabled {
  opacity: 0;
  pointer-events: none;
}
.reader-arrow.up { top: 50%; left: 32px; transform: translateY(-50%) rotate(-90deg); }
.reader-arrow.up:hover { transform: translateY(-50%) rotate(-90deg) scale(1.08); }
.reader-arrow.down { top: 50%; right: 32px; transform: translateY(-50%) rotate(90deg); }
.reader-arrow.down:hover { transform: translateY(-50%) rotate(90deg) scale(1.08); }

[dir="rtl"] .reader-arrow.up { left: auto; right: 32px; }
[dir="rtl"] .reader-arrow.down { right: auto; left: 32px; }

/* Pages */
.pages-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.page {
  width: var(--page-w);
  height: var(--page-h);
  background: #FFFFFF;
  box-shadow:
    0 24px 48px -16px rgba(74, 46, 31, 0.3),
    0 8px 16px -8px rgba(74, 46, 31, 0.15);
  scroll-margin-top: 90px;
  position: relative;
  overflow: hidden;
}

.page img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Placeholder shown when JPG isn't available yet */
.page-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #FAF6EF 0%, #EDE4D3 100%);
  color: var(--walnut);
  text-align: center;
  padding: 40px;
}
.page-placeholder .ph-num {
  font-family: var(--display);
  font-weight: 900;
  font-size: 96px;
  color: var(--walnut);
  opacity: 0.15;
  line-height: 1;
  margin-bottom: 16px;
}
.page-placeholder .ph-label {
  font-family: var(--display);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.32em;
  color: var(--walnut);
  opacity: 0.5;
}
.page-placeholder .ph-hint {
  margin-top: 24px;
  font-family: var(--body);
  font-size: 12px;
  color: var(--walnut);
  opacity: 0.4;
  font-weight: 400;
  direction: ltr;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .splash-header { padding: 24px 24px; }
  .splash-choices {
    grid-template-columns: 1fr;
    padding: 20px 24px 32px;
    gap: 16px;
  }
  .choice { min-height: 320px; padding: 28px; }

  .reader-stage { padding: 90px 0 40px; }
  .pages-stack { gap: 20px; }
  .page {
    width: 95vw;
    height: calc(95vw * 297 / 210);
    max-width: 210mm;
    max-height: 297mm;
  }

  .reader-bar {
    top: 14px;
    padding: 8px 10px 8px 16px;
    gap: 10px;
  }
  .reader-back .back-text,
  .reader-title { display: none; }
  .reader-bar-divider { display: none; }

  /* Hide side arrows on mobile, keep top-bar arrows */
  .reader-arrow { display: none; }

  .page-placeholder .ph-num { font-size: 64px; }
}

@media (max-width: 600px) {
  .reader-stage { padding: 80px 0 30px; }
  .page {
    width: 100vw;
    height: calc(100vw * 297 / 210);
    box-shadow: 0 12px 24px -8px rgba(74, 46, 31, 0.25);
  }
  .pages-stack { gap: 14px; }

  .splash-header { padding: 20px; }
  .splash-brand img { height: 30px; }
  .splash-title-wrap { padding: 32px 20px 24px; }
  .splash-foot { padding: 16px 20px 24px; }
}

/* ============================================
   PRINT
   ============================================ */
@media print {
  @page { size: A4 portrait; margin: 0; }
  body { background: white !important; }
  .reader-bar, .reader-arrow { display: none !important; }
  .reader-stage { padding: 0 !important; background: white !important; }
  .pages-stack { gap: 0 !important; }
  .page {
    width: 210mm !important;
    height: 297mm !important;
    max-width: none !important;
    max-height: none !important;
    box-shadow: none !important;
    page-break-after: always;
    break-after: page;
  }
  .page:last-child { page-break-after: auto; }
}