/* =====================
   DESIGN TOKENS
   Academic / Mature / Simple
   ===================== */
:root, [data-theme='light'] {
  /* Surfaces — warm white, near-white */
  --color-bg: #f9f8f6;
  --color-surface: #ffffff;
  --color-surface-2: #faf9f8;
  --color-surface-offset: #f3f1ee;
  --color-surface-offset-2: #ede9e4;
  --color-surface-dynamic: #e4e0da;
  --color-divider: #d8d4ce;
  --color-border: #cbc7c0;

  /* Text — deep charcoal, not pure black */
  --color-text: #1e1c18;
  --color-text-muted: #6b6860;
  --color-text-faint: #a8a49e;
  --color-text-inverse: #f9f8f6;

  /* Primary — deep navy, academic */
  --color-primary: #1a3a5c;
  --color-primary-hover: #122a44;
  --color-primary-active: #0b1d2e;
  --color-primary-highlight: #dce5ef;

  /* Secondary accent — muted gold for accents only */
  --color-accent: #8b6914;
  --color-accent-highlight: #f0e8d2;

  --radius-sm: 2px;
  --radius-md: 3px;
  --radius-lg: 4px;
  --radius-xl: 6px;
  --radius-full: 9999px;

  --transition-interactive: 160ms cubic-bezier(0.16, 1, 0.3, 1);

  --shadow-sm: 0 1px 3px oklch(0.15 0.01 60 / 0.06);
  --shadow-md: 0 4px 16px oklch(0.15 0.01 60 / 0.08);
  --shadow-lg: 0 12px 40px oklch(0.15 0.01 60 / 0.12);

  --content-narrow: 640px;
  --content-default: 760px;
  --content-wide: 1100px;

  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Source Sans 3', 'Helvetica Neue', sans-serif;

  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm: clamp(0.875rem, 0.82rem + 0.28vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.0625rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl: clamp(1.375rem, 1.1rem + 1vw, 1.875rem);
  --text-2xl: clamp(1.75rem, 1.2rem + 1.8vw, 2.75rem);
  --text-3xl: clamp(2.25rem, 1.2rem + 3vw, 3.75rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;
}

[data-theme='dark'] {
  --color-bg: #131211;
  --color-surface: #181716;
  --color-surface-2: #1c1b1a;
  --color-surface-offset: #1f1e1c;
  --color-surface-offset-2: #242320;
  --color-surface-dynamic: #2c2b28;
  --color-divider: #2a2926;
  --color-border: #38352f;
  --color-text: #cec9c2;
  --color-text-muted: #807b73;
  --color-text-faint: #56524c;
  --color-text-inverse: #131211;
  --color-primary: #7ba3c8;
  --color-primary-hover: #5d8bb5;
  --color-primary-active: #4070a0;
  --color-primary-highlight: #1e2c3a;
  --color-accent: #c4952a;
  --color-accent-highlight: #2e2618;
  --shadow-sm: 0 1px 3px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 16px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 40px oklch(0 0 0 / 0.45);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg: #131211;
    --color-surface: #181716;
    --color-surface-2: #1c1b1a;
    --color-surface-offset: #1f1e1c;
    --color-surface-offset-2: #242320;
    --color-surface-dynamic: #2c2b28;
    --color-divider: #2a2926;
    --color-border: #38352f;
    --color-text: #cec9c2;
    --color-text-muted: #807b73;
    --color-text-faint: #56524c;
    --color-text-inverse: #131211;
    --color-primary: #7ba3c8;
    --color-primary-hover: #5d8bb5;
    --color-primary-active: #4070a0;
    --color-primary-highlight: #1e2c3a;
    --color-accent: #c4952a;
    --color-accent-highlight: #2e2618;
  }
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.7;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role='list'], ol[role='list'] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.2; }
p, li, figcaption { text-wrap: pretty; max-width: 72ch; }

::selection {
  background: color-mix(in srgb, var(--color-primary) 15%, transparent);
  color: var(--color-text);
}
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
button { cursor: pointer; background: none; border: none; }
a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color var(--transition-interactive);
}
a:hover { color: var(--color-primary-hover); }

/* =====================
   TYPOGRAPHY HELPERS
   ===================== */
.text-muted { color: var(--color-text-muted); }
.small-note { font-size: var(--text-xs); }

/* =====================
   BUTTONS
   ===================== */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background var(--transition-interactive), box-shadow var(--transition-interactive);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--color-primary-hover); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:active { background: var(--color-primary-active); }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: transparent;
  color: var(--color-primary);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  border: 1.5px solid var(--color-primary);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background var(--transition-interactive), color var(--transition-interactive);
}
.btn-secondary:hover {
  background: var(--color-primary);
  color: #fff;
}

.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); }

.btn-pdf {
  border-color: var(--color-border);
  color: var(--color-text-muted);
}
.btn-pdf:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

.btn-pdf-card {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 1px;
  margin-bottom: var(--space-3);
  transition: opacity var(--transition-interactive);
}
.btn-pdf-card:hover { opacity: 0.7; color: var(--color-primary); }

/* =====================
   HEADER / NAV
   ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--color-bg) 95%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}
.site-header.scrolled {
  border-bottom-color: var(--color-divider);
  box-shadow: var(--shadow-sm);
}
.site-header.hidden { transform: translateY(-100%); }

.nav-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}
.logo:hover { color: var(--color-primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  list-style: none;
  margin-left: auto;
}
.nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 400;
  letter-spacing: 0.02em;
  transition: color var(--transition-interactive);
}
.nav-links a:hover { color: var(--color-text); }

.nav-cta {
  color: var(--color-primary) !important;
  font-weight: 600 !important;
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 1px;
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-border);
  transition: color var(--transition-interactive), background var(--transition-interactive);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface-offset); }

.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  flex-shrink: 0;
}
.mobile-nav {
  display: none;
  border-top: 1px solid var(--color-divider);
  padding: var(--space-4) var(--space-8);
  background: var(--color-bg);
}
.mobile-nav.open { display: block; }
.mobile-nav ul { list-style: none; }
.mobile-nav a {
  display: block;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-divider);
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }
  .nav-inner { gap: var(--space-4); }
}

/* =====================
   HERO
   ===================== */
.hero {
  display: grid;
  grid-template-columns: 1fr 560px;
  align-items: center;
  gap: 0;
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: clamp(var(--space-16), 8vw, var(--space-32)) var(--space-8) 0;
  border-bottom: 1px solid var(--color-divider);
  overflow: visible;
}

.hero-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  width: fit-content;
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text);
  letter-spacing: -0.01em;
}
.hero-title em {
  display: block;
  font-style: italic;
  font-size: clamp(1.25rem, 0.9rem + 1.2vw, 2rem);
  color: var(--color-text-muted);
  font-weight: 400;
  margin-top: var(--space-2);
  line-height: 1.35;
}

.hero-sub {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 400;
  color: var(--color-text-muted);
  font-style: italic;
  margin-top: calc(-1 * var(--space-3));
}

.hero-body {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.75;
  max-width: 62ch;
  margin-top: var(--space-2);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-3);
}

.hero-notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-primary-highlight);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
  line-height: 1.65;
  max-width: 62ch;
  margin-bottom: var(--space-2);
}
.hero-notice svg { flex-shrink: 0; margin-top: 3px; color: var(--color-primary); }
.hero-notice a { color: var(--color-primary); font-weight: 600; }

.hero-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-2);
}
.hero-meta a { color: var(--color-text-muted); text-decoration: none; border-bottom: 1px solid var(--color-border); }
.hero-meta a:hover { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.meta-sep { color: var(--color-text-faint); }

.hero-illustration {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  position: relative;
  margin-bottom: -2px;
}

.hero-img {
  width: 110%;
  max-width: 620px;
  height: auto;
  display: block;
  position: relative;
  right: -var(--space-8);
  margin-right: calc(-1 * var(--space-8));
  transform: translateY(2px);
}

/* =====================
   SECTION BASE
   ===================== */
.section {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
  border-bottom: 1px solid var(--color-divider);
}
.section:last-of-type { border-bottom: none; }

.section-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: 0 var(--space-8);
}

.section-label {
  display: block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}
.section-label.light { color: rgba(255,255,255,0.65); }

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-8);
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.section-intro {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 62ch;
  line-height: 1.75;
  margin-bottom: var(--space-8);
  margin-top: calc(-1 * var(--space-4));
}

/* =====================
   OVERVIEW
   ===================== */
.overview-grid {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-12);
  align-items: start;
}

.overview-body p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: var(--space-5);
}

.keywords {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.keyword-label {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  font-weight: 600;
}
.keyword-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.keyword-list span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  padding: 2px var(--space-3);
  border-radius: var(--radius-sm);
}

.info-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-sm);
}
.info-card:last-child { margin-bottom: 0; }
.info-card h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-family: var(--font-body);
}
.info-card p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: none;
}
.info-card ul { list-style: none; padding: 0; }
.info-card li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding: 3px 0 3px var(--space-4);
  position: relative;
  max-width: none;
}
.info-card li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-text-faint);
  font-size: var(--text-xs);
}

.highlight-card {
  background: var(--color-primary-highlight);
  border-color: color-mix(in srgb, var(--color-primary) 25%, transparent);
}
.highlight-card h3 { color: var(--color-primary); }
.highlight-card p { color: var(--color-text); }

.contact-lead {
  font-size: var(--text-xs);
  line-height: 1.7;
  margin-top: var(--space-3);
  margin-bottom: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: color-mix(in srgb, var(--color-surface) 60%, transparent);
  border-left: 2px solid var(--color-primary);
}
.contact-lead a { font-weight: 600; }

.contact-inline {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface-offset);
  border-left: 2px solid var(--color-primary);
  line-height: 1.6;
  max-width: none;
}

@media (max-width: 900px) { .overview-grid { grid-template-columns: 1fr; } }

/* =====================
   EDITORS
   ===================== */
.editors-section {
  background: var(--color-surface-offset);
}

.editors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-3);
}

.editor-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.editor-card.revealed { opacity: 1; transform: translateY(0); }

.editor-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.editor-info { display: flex; flex-direction: column; gap: 3px; }
.editor-info strong {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.3;
}
.editor-info span {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

.editor-role {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-accent);
  font-style: italic;
}

.editor-links {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-top: var(--space-1);
}

.orcid-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-xs);
  font-weight: 600;
  color: #4a8c1c;
  text-decoration: none;
  transition: opacity var(--transition-interactive);
}
.orcid-link:hover { opacity: 0.75; color: #4a8c1c; }

/* =====================
   GUIDELINES / TABS
   ===================== */
.guidelines-section { background: var(--color-bg); }

.guidelines-tabs {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.tab-nav {
  display: flex;
  background: var(--color-surface-offset);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
  scrollbar-width: none;
}
.tab-nav::-webkit-scrollbar { display: none; }

.tab-btn {
  padding: var(--space-4) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  letter-spacing: 0.02em;
  transition: color var(--transition-interactive), border-color var(--transition-interactive);
}
.tab-btn:hover { color: var(--color-text); }
.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background: var(--color-surface);
}

.tab-content {
  display: none;
  padding: var(--space-8);
  background: var(--color-surface);
}
.tab-content.active { display: block; }

/* Abstract steps */
.guideline-steps { display: flex; flex-direction: column; gap: var(--space-5); }

.guideline-step {
  display: flex;
  gap: var(--space-6);
  align-items: flex-start;
  padding: var(--space-5) var(--space-6);
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.guideline-step.revealed { opacity: 1; transform: translateY(0); }

.step-num {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-border);
  line-height: 1;
  min-width: 36px;
  flex-shrink: 0;
}
.step-body { flex: 1; }
.step-body h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: 0.01em;
}
.step-body p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 60ch;
}
.step-body a { margin-top: var(--space-3); display: inline-flex; }

/* Chapter reqs */
.chapter-reqs { display: flex; flex-direction: column; gap: var(--space-8); }

.req-block h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-divider);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.req-block p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
  max-width: 62ch;
}
.req-block ul, .req-block ol {
  padding-left: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.req-block li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 62ch;
}

.spec-row {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  margin-top: var(--space-4);
}
.spec-item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: var(--space-4);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 150px;
}
.spec-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
}
.spec-value {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
}

/* Additional notes */
.additional-notes { display: flex; flex-direction: column; gap: var(--space-6); }

.note-block {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding-bottom: var(--space-6);
  border-bottom: 1px solid var(--color-divider);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.note-block:last-child { border-bottom: none; padding-bottom: 0; }
.note-block.revealed { opacity: 1; transform: translateY(0); }

.note-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}
.note-block h3 {
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.note-block p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  max-width: 62ch;
}

@media (max-width: 600px) {
  .guideline-step { flex-direction: column; gap: var(--space-3); }
  .tab-content { padding: var(--space-6) var(--space-5); }
}

/* =====================
   PRE-SUBMISSION ENQUIRY SECTION
   ===================== */
.enquiry-section {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) 0;
  border-bottom: 1px solid var(--color-divider);
  background: var(--color-surface-offset);
}

.enquiry-box {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: var(--space-12);
  align-items: start;
  margin-top: var(--space-2);
}

.enquiry-body h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.enquiry-body p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: var(--space-4);
  max-width: 62ch;
}

.enquiry-response-note {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border-left: 3px solid var(--color-primary);
  padding: var(--space-4) var(--space-5);
  line-height: 1.65;
  max-width: 62ch;
  overflow-wrap: break-word;
}
.enquiry-response-note svg { display: none; }
.enquiry-response-note a { color: var(--color-primary); font-weight: 600; }

.enquiry-action {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: calc(var(--space-20) + var(--space-4));
}

.enquiry-form-label {
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-muted);
  max-width: none;
  margin: 0;
}

.enquiry-then {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
  max-width: none;
  margin: 0;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
}

@media (max-width: 760px) {
  .enquiry-box { grid-template-columns: 1fr; }
  .enquiry-action { position: static; }
}

/* =====================
   TIMELINE
   ===================== */
.timeline-section { background: var(--color-bg); }

.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: var(--space-10);
}
.timeline::before {
  content: '';
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-8);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.timeline-item.revealed { opacity: 1; transform: translateX(0); }
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: calc(-1 * var(--space-10) + 6px);
  top: 6px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1.5px solid var(--color-border);
  z-index: 1;
}
.timeline-marker.current {
  border-color: var(--color-primary);
  background: var(--color-primary);
}
.timeline-marker.end {
  border-color: var(--color-text-faint);
  background: var(--color-text-faint);
}

.timeline-phase {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 3px;
}
.timeline-content h3 {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.timeline-content p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
  max-width: 58ch;
}

.timeline-notice {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: var(--color-surface);
  border-left: 2px solid var(--color-primary);
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-2);
  line-height: 1.7;
  width: 100%;
  overflow-wrap: break-word;
}
.timeline-notice svg { display: none; }
.timeline-notice a { color: var(--color-primary); font-weight: 600; }

.timeline-link {
  display: inline-flex;
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid var(--color-primary);
  padding-bottom: 1px;
}
.timeline-link:hover { opacity: 0.7; }

/* =====================
   CTA SECTION
   ===================== */
.cta-section {
  background: var(--color-primary);
  padding: clamp(var(--space-16), 8vw, var(--space-24)) var(--space-8);
  text-align: left;
  position: relative;
}

.cta-deco { display: none; }

.cta-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-5);
}
.cta-inner h2 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: #fff;
  line-height: 1.15;
}
.cta-inner p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.82);
  line-height: 1.75;
  max-width: 58ch;
}

.cta-inner .btn-primary {
  background: #fff;
  color: var(--color-primary);
  box-shadow: none;
}
.cta-inner .btn-primary:hover { background: rgba(255,255,255,0.9); color: var(--color-primary); }

.cta-note {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.05em;
}

.cta-contact {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.88);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  border-left: 3px solid rgba(255,255,255,0.6);
  padding: var(--space-3) var(--space-5);
  max-width: 54ch;
  line-height: 1.65;
}
.cta-contact strong { color: #fff; }
.cta-contact a { color: rgba(255,255,255,0.9); font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
.cta-contact a:hover { color: #fff; }

/* =====================
   FOOTER
   ===================== */
.site-footer {
  background: var(--color-text);
  padding: var(--space-12) var(--space-8);
}
.footer-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--color-text-inverse);
}
.footer-desc {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-text-inverse) 60%, transparent);
  max-width: 60ch;
  line-height: 1.65;
}
.footer-links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}
.footer-links a {
  font-size: var(--text-sm);
  color: color-mix(in srgb, var(--color-text-inverse) 55%, transparent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}
.footer-links a:hover {
  color: var(--color-text-inverse);
  border-bottom-color: var(--color-text-inverse);
}
.footer-copy {
  font-size: var(--text-xs);
  color: color-mix(in srgb, var(--color-text-inverse) 35%, transparent);
  margin-top: var(--space-2);
}

/* =====================
   RESPONSIVE
   ===================== */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; }
  .hero-illustration { display: none; }
}

@media (max-width: 600px) {
  .nav-inner { padding: var(--space-3) var(--space-5); }
  .section-inner { padding: 0 var(--space-5); }
  .hero { padding-left: var(--space-5); padding-right: var(--space-5); }
  .hero-actions { flex-direction: column; align-items: flex-start; }
  .spec-row { gap: var(--space-3); }
  .cta-section { padding-left: var(--space-5); padding-right: var(--space-5); }
  .site-footer { padding-left: var(--space-5); padding-right: var(--space-5); }
  .timeline { padding-left: var(--space-8); }
  .tab-content { padding: var(--space-5); }
}