/* ==========================================================================
   Sudoku Universe — Shared Stylesheet
   All three pages (index, terms, privacy) import this file.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Backgrounds */
  --bg-deep:      #06080F;
  --bg-base:      #0C1220;
  --bg-card:      #111C30;
  --bg-card-hover:#172140;
  --bg-elevated:  #1A2845;

  /* Borders */
  --border-subtle:  rgba(148, 163, 184, 0.07);
  --border-normal:  rgba(148, 163, 184, 0.12);
  --border-strong:  rgba(148, 163, 184, 0.22);
  --border-accent:  rgba(14, 165, 233, 0.35);

  /* Text */
  --text-primary:   #F0F6FF;
  --text-secondary: #94A3B8;
  --text-muted:     #64748B;
  --text-inverse:   #060810;

  /* Accents — teal/sky palette matching the Android app */
  --accent-sky:    #0EA5E9;
  --accent-teal:   #14B8A6;
  --accent-purple: #818CF8;
  --accent-orange: #FB923C;
  --accent-green:  #34D399;
  --accent-red:    #F87171;

  /* Gradients */
  --grad-primary:   linear-gradient(135deg, #0EA5E9 0%, #14B8A6 100%);
  --grad-hero-text: linear-gradient(135deg, #F0F6FF 0%, #0EA5E9 55%, #14B8A6 100%);
  --grad-card:      linear-gradient(145deg, rgba(255,255,255,0.035) 0%, rgba(255,255,255,0.01) 100%);
  --grad-surface:   linear-gradient(180deg, rgba(14,165,233,0.06) 0%, transparent 60%);

  /* Spacing scale */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;

  /* Radius */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   18px;
  --radius-xl:   24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.4), 0 1px 2px rgba(0,0,0,0.3);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.5), 0 2px 6px rgba(0,0,0,0.35);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.6), 0 4px 16px rgba(0,0,0,0.4);
  --shadow-glow:0 0 40px rgba(14,165,233,0.18);

  /* Transitions */
  --ease-out:   cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring:cubic-bezier(0.34, 1.56, 0.64, 1);
  --duration-fast:  150ms;
  --duration-base:  250ms;
  --duration-slow:  400ms;

  /* Layout */
  --max-width: 1140px;
  --nav-height: 68px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

a {
  color: var(--accent-sky);
  text-decoration: none;
  transition: color var(--duration-fast) ease,
              opacity var(--duration-fast) ease;
}
a:hover { color: var(--accent-teal); }

img, svg { display: block; max-width: 100%; }

ul, ol { list-style: none; }

button {
  font-family: var(--font-sans);
  cursor: pointer;
  border: none;
  outline: none;
  background: none;
}

input, textarea, select {
  font-family: var(--font-sans);
  font-size: 1rem;
}

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

/* --------------------------------------------------------------------------
   3. Layout Utilities
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.section {
  padding-block: var(--space-24);
}

.section--sm {
  padding-block: var(--space-16);
}

/* --------------------------------------------------------------------------
   4. Typography Scale
   -------------------------------------------------------------------------- */
.text-display {
  font-size: clamp(2.4rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.text-h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

.text-h2 {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.text-h3 {
  font-size: clamp(1.1rem, 1.8vw, 1.35rem);
  font-weight: 600;
  line-height: 1.35;
}

.text-body-lg {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: 1.7;
}

.text-body {
  font-size: 0.9375rem;
  line-height: 1.65;
}

.text-sm {
  font-size: 0.8125rem;
  line-height: 1.5;
}

.text-gradient {
  background: var(--grad-hero-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-secondary { color: var(--text-secondary); }
.text-muted     { color: var(--text-muted); }
.text-accent    { color: var(--accent-sky); }
.text-center    { text-align: center; }

/* --------------------------------------------------------------------------
   5. Navigation / Header
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(6, 8, 15, 0.82);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--duration-base) ease,
              border-color var(--duration-base) ease;
}

.site-header.scrolled {
  background: rgba(6, 8, 15, 0.96);
  border-bottom-color: var(--border-normal);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav__logo:hover { color: var(--text-primary); opacity: 0.9; }

/* The real app icon. It ships with its own rounded corners and transparent
   surround, so no background is set here — a gradient would bleed through
   those corners. border-radius only shapes the glow behind it. */
.logo-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 0 20px rgba(14,165,233,0.25);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  transition: color var(--duration-fast) ease,
              background var(--duration-fast) ease;
}
.nav__link:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.06);
}

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 9px var(--space-5);
  background: var(--grad-primary);
  color: #fff;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: opacity var(--duration-fast) ease,
              transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-base) ease;
  box-shadow: 0 0 0 0 rgba(14,165,233,0);
}
.nav__cta:hover {
  color: #fff;
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(14,165,233,0.35);
}

/* Mobile hamburger */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  cursor: pointer;
  background: none;
  border: none;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: transform var(--duration-base) ease,
              opacity var(--duration-fast) ease;
}

/* --------------------------------------------------------------------------
   6. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-base);
  border-top: 1px solid var(--border-subtle);
  padding-block: var(--space-16) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  padding-bottom: var(--space-10);
  border-bottom: 1px solid var(--border-subtle);
}

.footer__brand p {
  margin-top: var(--space-4);
  font-size: 0.875rem;
  color: var(--text-muted);
  max-width: 260px;
  line-height: 1.65;
}

.footer__col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-5);
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__col a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  transition: color var(--duration-fast) ease;
}
.footer__col a:hover { color: var(--text-primary); }

.footer__bottom {
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.footer__bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer__legal {
  display: flex;
  gap: var(--space-5);
}

.footer__legal a {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer__legal a:hover { color: var(--text-secondary); }

/* Company attribution — footer brand block and copyright line */
.footer__brand .footer__by {
  margin-top: var(--space-3);
}

.footer__brand .footer__by a,
.footer__bottom p a {
  color: var(--text-secondary);
  font-weight: 600;
  transition: color var(--duration-fast) ease;
}

.footer__brand .footer__by a:hover,
.footer__bottom p a:hover { color: var(--accent-sky); }

/* --------------------------------------------------------------------------
   7. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 11px var(--space-6);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: opacity var(--duration-fast) ease,
              transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-base) ease;
  white-space: nowrap;
  text-decoration: none;
}

.btn--primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(14,165,233,0.25);
}
.btn--primary:hover {
  color: #fff;
  opacity: 0.92;
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(14,165,233,0.4);
}

.btn--outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn--outline:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--border-accent);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text-primary);
}
.btn--ghost:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn--sm {
  padding: 7px var(--space-4);
  font-size: 0.875rem;
}

.btn--lg {
  padding: 14px var(--space-8);
  font-size: 1rem;
}

/* Contact-type buttons */
.btn--support { background: linear-gradient(135deg, #0EA5E9, #0284C7); color:#fff; }
.btn--query   { background: linear-gradient(135deg, #818CF8, #6366F1); color:#fff; }
.btn--bug     { background: linear-gradient(135deg, #FB923C, #EA580C); color:#fff; }
.btn--support:hover, .btn--query:hover, .btn--bug:hover {
  color: #fff;
  opacity: 0.9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* --------------------------------------------------------------------------
   7b. Donation buttons
   Cohesive "glass" cards. Each carries a per-brand --brand colour used only as
   an accent (icon tint, hover border + glow) so they stay instantly
   recognisable without the jarring full-brand fills clashing with the palette.
   -------------------------------------------------------------------------- */
.donation-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-3);
  max-width: 560px;
  margin-inline: auto;
}

.donate-btn {
  --brand: var(--accent-sky);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  text-align: left;
  background: rgba(255, 255, 255, 0.035);
  border: 1px solid var(--border-normal);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  text-decoration: none;
  transition: transform var(--duration-base) var(--ease-out),
              border-color var(--duration-base) ease,
              background var(--duration-base) ease,
              box-shadow var(--duration-base) ease;
}
.donate-btn:hover {
  color: var(--text-primary);
  transform: translateY(-3px);
  border-color: color-mix(in srgb, var(--brand) 55%, transparent);
  background: color-mix(in srgb, var(--brand) 8%, rgba(255, 255, 255, 0.035));
  box-shadow: 0 12px 30px -12px color-mix(in srgb, var(--brand) 50%, transparent),
              var(--shadow-md);
}

.donate-btn__icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--brand) 14%, transparent);
  color: var(--brand);
  font-size: 1.3rem;
}
.donate-btn__icon svg { width: 22px; height: 22px; }

.donate-btn__text { display: flex; flex-direction: column; gap: 1px; flex: 1; min-width: 0; }
.donate-btn__name { font-size: 0.9375rem; font-weight: 600; letter-spacing: -0.01em; }
.donate-btn__meta { font-size: 0.75rem; color: var(--text-muted); }

.donate-btn__arrow {
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--duration-base) var(--ease-out),
              color var(--duration-base) ease;
}
.donate-btn:hover .donate-btn__arrow { color: var(--brand); transform: translateX(3px); }

/* --------------------------------------------------------------------------
   8. Badge / Pill
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.badge--primary {
  background: rgba(14,165,233,0.12);
  color: var(--accent-sky);
  border: 1px solid rgba(14,165,233,0.2);
}

.badge--teal {
  background: rgba(20,184,166,0.12);
  color: var(--accent-teal);
  border: 1px solid rgba(20,184,166,0.2);
}

/* --------------------------------------------------------------------------
   9. Cards
   -------------------------------------------------------------------------- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  background-image: var(--grad-card);
  transition: background var(--duration-base) ease,
              border-color var(--duration-base) ease,
              transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) ease;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow), var(--shadow-md);
}

/* --------------------------------------------------------------------------
   10. Section Labels
   -------------------------------------------------------------------------- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-sky);
  margin-bottom: var(--space-4);
}

.section-heading {
  margin-bottom: var(--space-4);
}

.section-subheading {
  color: var(--text-secondary);
  max-width: 540px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

/* --------------------------------------------------------------------------
   11. Divider
   -------------------------------------------------------------------------- */
.divider {
  width: 48px;
  height: 3px;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  margin-block: var(--space-5);
}
.divider--center { margin-inline: auto; }

/* --------------------------------------------------------------------------
   12. Modal
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 900;
  background: rgba(6, 8, 15, 0.75);
  backdrop-filter: blur(8px) saturate(150%);
  -webkit-backdrop-filter: blur(8px) saturate(150%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-base) ease;
}

.modal-backdrop.is-open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--border-normal);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(14,165,233,0.1);
  padding: var(--space-8);
  opacity: 0;
  transform: translateY(18px) scale(0.96);
  transition: opacity var(--duration-base) ease,
              transform var(--duration-slow) var(--ease-spring);
  scrollbar-width: thin;
  scrollbar-color: var(--border-normal) transparent;
}

.modal-backdrop.is-open .modal {
  opacity: 1;
  transform: translateY(0) scale(1);
}

@media (prefers-reduced-motion: reduce) {
  .modal { transition: opacity var(--duration-fast) ease; transform: none; }
  .modal-backdrop.is-open .modal { transform: none; }
}

.modal__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.modal__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.modal__icon--support  { background: rgba(14,165,233,0.15); }
.modal__icon--query    { background: rgba(129,140,248,0.15); }
.modal__icon--bug      { background: rgba(251,146,60,0.15); }

.modal__close {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border-normal);
  color: var(--text-secondary);
  font-size: 1.1rem;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--duration-fast) ease,
              color var(--duration-fast) ease;
  flex-shrink: 0;
}
.modal__close:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }

.modal__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.modal__desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.modal__heading {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

/* Body scroll lock while a modal is open */
body.modal-open { overflow: hidden; }

/* Segmented category switcher */
.modal__tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-1);
  padding: var(--space-1);
  margin-bottom: var(--space-5);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.modal__tab {
  padding: 8px var(--space-3);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: calc(var(--radius-md) - 4px);
  transition: color var(--duration-fast) ease,
              background var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
}
.modal__tab:hover { color: var(--text-primary); }
.modal__tab.is-active {
  color: var(--text-primary);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

/* --------------------------------------------------------------------------
   13. Form Elements
   -------------------------------------------------------------------------- */
.form { display: flex; flex-direction: column; gap: var(--space-4); }

.form__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

.form__group { display: flex; flex-direction: column; gap: var(--space-2); }

.form__label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.01em;
}

.form__input,
.form__textarea,
.form__select {
  width: 100%;
  padding: 10px var(--space-4);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border-normal);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9375rem;
  transition: border-color var(--duration-fast) ease,
              background var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
  -webkit-appearance: none;
  appearance: none;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
  outline: none;
  border-color: var(--accent-sky);
  background: rgba(14,165,233,0.06);
  box-shadow: 0 0 0 3px rgba(14,165,233,0.15);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: var(--text-muted);
}

.form__textarea {
  resize: vertical;
  min-height: 110px;
  line-height: 1.6;
}

.form__actions {
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
  margin-top: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-subtle);
}

/* Field set — crossfades when the category switches, so there is no jarring
   swap. Field counts are equal across categories, so height stays stable. */
.form__fields {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: opacity var(--duration-fast) ease;
}
.form__fields.is-swapping { opacity: 0; }

.form__note {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.form__note strong { color: var(--text-secondary); font-weight: 600; }

.form__optional { color: var(--text-muted); font-weight: 400; }

.form__input.is-invalid,
.form__textarea.is-invalid {
  border-color: var(--accent-red);
  box-shadow: 0 0 0 3px rgba(248, 113, 113, 0.18);
}

/* --------------------------------------------------------------------------
   14. Legal Page Layout (shared by terms.html and privacy.html)
   -------------------------------------------------------------------------- */
.legal-hero {
  padding-block: var(--space-16) var(--space-10);
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(14,165,233,0.08) 0%, transparent 70%);
  border-bottom: 1px solid var(--border-subtle);
}

.legal-hero .badge { margin-bottom: var(--space-4); }

.legal-hero h1 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-3);
}

.legal-hero p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.legal-layout {
  padding-block: var(--space-16);
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-10);
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
}

.legal-toc h3 {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.legal-toc ul { display: flex; flex-direction: column; gap: var(--space-1); }

.legal-toc a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: color var(--duration-fast) ease,
              border-color var(--duration-fast) ease,
              background var(--duration-fast) ease;
}
.legal-toc a:hover {
  color: var(--text-primary);
  background: rgba(255,255,255,0.04);
  border-left-color: var(--accent-sky);
}
.legal-toc a.active {
  color: var(--accent-sky);
  border-left-color: var(--accent-sky);
  background: rgba(14,165,233,0.06);
}

.legal-content { min-width: 0; }

.legal-section {
  padding-bottom: var(--space-12);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-12);
}
.legal-section:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.legal-section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.legal-section h2 .section-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: rgba(14,165,233,0.1);
  border: 1px solid rgba(14,165,233,0.2);
  color: var(--accent-sky);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.legal-section h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-block: var(--space-5) var(--space-3);
}

.legal-section p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
  margin-bottom: var(--space-4);
}
.legal-section p:last-child { margin-bottom: 0; }

.legal-section ul, .legal-section ol {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.75;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.legal-section ul li { list-style-type: disc; }
.legal-section ol li { list-style-type: decimal; }

.legal-callout {
  background: rgba(14,165,233,0.06);
  border: 1px solid rgba(14,165,233,0.15);
  border-left: 3px solid var(--accent-sky);
  border-radius: var(--radius-md);
  padding: var(--space-5) var(--space-6);
  margin-block: var(--space-6);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   15. Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes pulse-ring {
  0%   { box-shadow: 0 0 0 0 rgba(14,165,233,0.4); }
  70%  { box-shadow: 0 0 0 12px rgba(14,165,233,0); }
  100% { box-shadow: 0 0 0 0 rgba(14,165,233,0); }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}

.animate-fade-up { animation: fadeInUp var(--duration-slow) var(--ease-out) both; }
.delay-1 { animation-delay: 100ms; }
.delay-2 { animation-delay: 200ms; }
.delay-3 { animation-delay: 300ms; }
.delay-4 { animation-delay: 400ms; }
.delay-5 { animation-delay: 500ms; }

/* --------------------------------------------------------------------------
   16. Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
  }

  .legal-layout {
    grid-template-columns: 1fr;
  }

  .legal-toc { position: static; }
}

@media (max-width: 680px) {
  :root { --nav-height: 60px; }

  .nav__links, .nav__cta { display: none; }
  .nav__toggle { display: flex; }

  .nav__links.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: rgba(6, 8, 15, 0.98);
    border-bottom: 1px solid var(--border-normal);
    padding: var(--space-4) var(--space-6) var(--space-6);
    gap: var(--space-1);
    z-index: 99;
  }

  .nav__links.is-open .nav__cta {
    display: inline-flex;
    margin-top: var(--space-3);
    width: fit-content;
  }

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

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}