/* ==========================================================================
   Mat Log — site styles
   Built to match the Mat Log mobile app design system (flow_roll_mat_log):
   Charcoal Ink (#292D32) emphasis on off-white page (#F6F7FB) & white cards,
   Periwinkle (#CFDDFA) & Pink (#F6B4E1) dual accents, Playfair Display headers,
   Inter body typography, soft periwinkle-tinted shadows (#9CB2DD).
   ========================================================================== */

:root {
  /* Brand Palette (FlowBrand in flutter app) */
  --ink: #292d32;
  --white: #ffffff;
  --page-bg: #f6f7fb;

  --periwinkle: #cfddfa;
  --periwinkle-soft: #e7eefc;
  --periwinkle-ink: #35548f;

  --pink: #f6b4e1;
  --pink-soft: #fce4f3;
  --pink-ink: #9b3b7d;

  --shadow-color: #9cb2dd;

  /* Theme Roles — Light Mode */
  --primary: var(--periwinkle);
  --primary-ink: var(--periwinkle-ink);
  --primary-hover: #b8cefa;

  --accent-pink: var(--pink);
  --accent-pink-soft: var(--pink-soft);
  --accent-pink-ink: var(--pink-ink);

  --bg: var(--page-bg);
  --surface: #ffffff;
  --surface-muted: #f0f2f8;
  --surface-elevated: #ffffff;

  --text-strong: var(--ink);
  --text-body: #4b525d;
  --text-muted: #6b707a;
  --text-faint: #989da8;

  --border: #e6e8ee;
  --border-strong: #b9bec8;

  --nav-bg: rgba(246, 247, 251, 0.85);
  --footer-bg: #edf0f7;

  --badge-bg: var(--periwinkle-soft);
  --badge-border: var(--periwinkle);
  --badge-text: var(--periwinkle-ink);

  --icon-tile-bg: var(--periwinkle-soft);
  --icon-tile-color: var(--periwinkle-ink);
  --icon-tile-alt-bg: var(--pink-soft);
  --icon-tile-alt-color: var(--pink-ink);

  --hover-tint: rgba(207, 221, 250, 0.3);
  --invert-bg: var(--ink);
  --invert-text: #ffffff;

  --shadow-soft: 0 20px 40px -15px rgba(156, 178, 221, 0.35);
  --shadow-sm: 0 2px 4px 0 rgba(41, 45, 50, 0.04);
  --shadow-md: 0 6px 18px -2px rgba(156, 178, 221, 0.28);
  --shadow-xl: 0 24px 36px -8px rgba(156, 178, 221, 0.35),
    0 8px 16px -6px rgba(41, 45, 50, 0.06);

  /* Fonts (Playfair Display for headings, Inter for body/UI) */
  --font-display: "Playfair Display", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.dark {
  --bg: #14171a;
  --surface: #1e2228;
  --surface-muted: #262b33;
  --surface-elevated: #282d36;

  --text-strong: #ffffff;
  --text-body: #a4abb8;
  --text-muted: #7c8391;
  --text-faint: #5b6270;

  --border: #2e3440;
  --border-strong: #434b5c;

  --nav-bg: rgba(20, 23, 26, 0.85);
  --footer-bg: #111316;

  --primary: #35548f;
  --primary-ink: #ffffff;
  --primary-hover: #4568ab;

  --badge-bg: rgba(53, 84, 143, 0.35);
  --badge-border: rgba(207, 221, 250, 0.3);
  --badge-text: #cfddfa;

  --icon-tile-bg: rgba(53, 84, 143, 0.3);
  --icon-tile-color: #cfddfa;
  --icon-tile-alt-bg: rgba(155, 59, 125, 0.25);
  --icon-tile-alt-color: #f6b4e1;

  --hover-tint: rgba(207, 221, 250, 0.12);
  --invert-bg: #ffffff;
  --invert-text: var(--ink);

  --shadow-soft: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 6px 18px -2px rgba(0, 0, 0, 0.4);
}

/* ---------- base ---------- */

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

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

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text-strong);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, .brand-name {
  font-family: var(--font-display);
  font-weight: 600;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

.container {
  max-width: 72rem; /* max-w-6xl */
  margin: 0 auto;
  padding: 0 1rem;
}

.container-narrow {
  max-width: 56rem; /* max-w-4xl */
  margin: 0 auto;
  padding: 0 1rem;
}

@media (min-width: 640px) {
  .container,
  .container-narrow {
    padding: 0 1.5rem;
  }
}

.material-icons-round,
.material-symbols-outlined {
  vertical-align: middle;
  user-select: none;
}

@keyframes fadeIn {
  0% {
    opacity: 0;
    transform: translateY(-10px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes gradient-move {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 100% 100%;
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.animate-fade-in {
  animation: fadeIn 0.2s ease-out forwards;
}

/* ---------- navbar ---------- */

.navbar {
  position: fixed;
  top: 1rem;
  left: 0;
  right: 0;
  z-index: 50;
  padding: 0 1rem;
}

@media (min-width: 768px) {
  .navbar {
    padding: 0 2rem;
  }
}

.navbar-inner {
  max-width: 72rem;
  margin: 0 auto;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-strong);
  border-radius: 9999px;
  box-shadow: var(--shadow-sm);
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: all 0.3s ease;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: opacity 0.2s ease;
}

.brand:hover {
  opacity: 0.8;
}

.brand-logo {
  height: 2rem;
  width: auto;
  flex: none;
  display: block;
}

.logo-dark {
  display: none;
}

.dark .logo-light {
  display: none;
}

.dark .logo-dark {
  display: block;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-strong);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-body);
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-links a {
  transition: color 0.2s ease;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--primary-ink);
}

.dark .nav-links a:hover,
.dark .nav-links a[aria-current="page"] {
  color: var(--periwinkle);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.icon-button {
  padding: 0.5rem;
  border: none;
  background: transparent;
  border-radius: 9999px;
  color: var(--text-body);
  cursor: pointer;
  line-height: 0;
  transition: background-color 0.2s ease;
}

.icon-button:hover {
  background: var(--hover-tint);
}

.icon-button .material-icons-round {
  font-size: 1.125rem;
}

.theme-icon-dark {
  display: inline;
}
.theme-icon-light {
  display: none;
}
.dark .theme-icon-dark {
  display: none;
}
.dark .theme-icon-light {
  display: inline;
}

.navbar .nav-cta {
  display: none;
}

@media (min-width: 640px) {
  .navbar .nav-cta {
    display: inline-flex;
  }
}

.nav-menu-button {
  display: inline-block;
}

@media (min-width: 768px) {
  .nav-menu-button {
    display: none;
  }
}

.nav-mobile {
  position: absolute;
  top: 5rem;
  left: 1rem;
  right: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow-xl);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  animation: fadeIn 0.2s ease-out forwards;
}

.nav-mobile[hidden] {
  display: none;
}

@media (min-width: 768px) {
  .nav-mobile {
    display: none !important;
  }
}

.nav-mobile a {
  color: var(--text-body);
  font-weight: 500;
  padding: 0.5rem;
  border-radius: 0.5rem;
  transition: background-color 0.2s ease;
}

.nav-mobile a:hover {
  background: var(--hover-tint);
}

.nav-mobile .btn {
  margin-top: 0.5rem;
  padding: 0.75rem 1.25rem;
  border-radius: 0.75rem;
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  border-radius: 12px; /* FlowRadii.md */
  text-decoration: none;
  transition: background-color 0.2s ease, color 0.2s ease,
    box-shadow 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: var(--primary);
  color: var(--primary-ink);
  box-shadow: 0 4px 12px rgba(156, 178, 221, 0.3);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(156, 178, 221, 0.45);
}

.dark .btn-primary {
  background: var(--periwinkle);
  color: var(--ink);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.dark .btn-primary:hover {
  background: #e2ebfd;
  color: var(--ink);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-strong);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--periwinkle-soft);
  border-color: var(--periwinkle);
  transform: translateY(-1px);
}

.dark .btn-secondary:hover {
  background: var(--surface-muted);
  border-color: var(--border-strong);
}

.btn-lg {
  padding: 0.75rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 12px;
}

.btn-store {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--invert-bg);
  color: var(--invert-text);
  padding: 0.625rem 1.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.btn-store:hover {
  transform: scale(1.03);
}

.btn-store[aria-disabled="true"] {
  opacity: 0.55;
  pointer-events: none;
}

.btn-store svg {
  width: 2rem;
  height: 2rem;
  fill: currentColor;
  flex: none;
}

.btn-store .store-kicker {
  font-size: 0.625rem;
  text-transform: uppercase;
  font-weight: 700;
  opacity: 0.75;
  line-height: 1;
  margin-bottom: 0.125rem;
}

.btn-store .store-name {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
}

/* ---------- hero ---------- */

.hero {
  position: relative;
  padding: 9.5rem 0 5rem;
  overflow: hidden;
  text-align: center;
  background-color: var(--bg);
  background-image: radial-gradient(
      at 15% 15%,
      rgba(207, 221, 250, 0.6) 0px,
      transparent 55%
    ),
    radial-gradient(at 85% 10%, rgba(246, 180, 225, 0.45) 0px, transparent 55%),
    radial-gradient(at 50% 60%, rgba(231, 238, 252, 0.7) 0px, transparent 65%);
  background-size: 140% 140%;
  animation: gradient-move 20s ease infinite alternate;
}

.dark .hero {
  background-color: var(--bg);
  background-image: radial-gradient(
      at 15% 15%,
      rgba(53, 84, 143, 0.35) 0px,
      transparent 55%
    ),
    radial-gradient(at 85% 10%, rgba(155, 59, 125, 0.25) 0px, transparent 55%),
    radial-gradient(at 50% 60%, rgba(30, 34, 42, 0.6) 0px, transparent 65%);
}

@media (min-width: 768px) {
  .hero {
    padding-bottom: 7rem;
  }
}

.hero-blob {
  position: absolute;
  border-radius: 9999px;
  pointer-events: none;
  mix-blend-mode: multiply;
}

.dark .hero-blob {
  mix-blend-mode: screen;
}

.hero-blob-1 {
  top: -10%;
  left: -5%;
  width: 55%;
  height: 55%;
  background: rgba(207, 221, 250, 0.65);
  filter: blur(100px);
}

.hero-blob-2 {
  top: 5%;
  right: -5%;
  width: 45%;
  height: 45%;
  background: rgba(246, 180, 225, 0.55);
  filter: blur(90px);
}

.hero-blob-3 {
  bottom: -15%;
  left: 25%;
  width: 50%;
  height: 50%;
  background: rgba(231, 238, 252, 0.6);
  filter: blur(90px);
}

.dark .hero-blob-1 {
  background: rgba(53, 84, 143, 0.25);
}
.dark .hero-blob-2 {
  background: rgba(155, 59, 125, 0.2);
}
.dark .hero-blob-3 {
  background: rgba(38, 43, 51, 0.3);
}

.hero-content {
  position: relative;
  z-index: 10;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  border-radius: 9999px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  font-size: 0.78125rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  animation: fadeIn 0.2s ease-out forwards;
}

.badge-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 9999px;
  background: var(--periwinkle-ink);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.dark .badge-dot {
  background: var(--periwinkle);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  color: var(--text-strong);
  margin: 0 0 1.5rem;
}

.hero h1 br {
  display: none;
}

@media (min-width: 768px) {
  .hero h1 {
    font-size: 4.25rem;
  }
  .hero h1 br {
    display: block;
  }
}

.gradient-text {
  background: linear-gradient(135deg, var(--periwinkle-ink) 0%, var(--pink-ink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.dark .gradient-text {
  background: linear-gradient(135deg, #a5c2f9 0%, #f6b4e1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  font-size: 1.125rem;
  color: var(--text-body);
  max-width: 42rem;
  margin: 0 auto 2.25rem;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .hero-lede {
    font-size: 1.25rem;
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.hero-note {
  font-size: 0.75rem;
  color: var(--text-faint);
  font-weight: 500;
  max-width: 28rem;
  margin: 0 auto;
}

/* ---------- interactive app mockup widget ---------- */

.hero-showcase {
  margin-top: 3.5rem;
  position: relative;
  z-index: 10;
}

.app-preview-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  max-width: 58rem;
  margin: 0 auto;
  text-align: left;
}

.app-preview-header {
  background: var(--surface-muted);
  border-bottom: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.preview-dot-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.preview-dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 9999px;
}
.preview-dot-red { background: #ff5f56; }
.preview-dot-yellow { background: #ffbd2e; }
.preview-dot-green { background: #27c93f; }

.preview-nav-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--surface);
  padding: 0.25rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
}

.preview-tab-btn {
  border: none;
  background: transparent;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
  font-family: var(--font-body);
}

.preview-tab-btn.active {
  background: var(--ink);
  color: var(--white);
}

.dark .preview-tab-btn.active {
  background: var(--periwinkle);
  color: var(--ink);
}

.preview-content-area {
  padding: 1.75rem;
}

.preview-panel-view {
  display: none;
}

.preview-panel-view.active {
  display: block;
  animation: fadeIn 0.3s ease-out forwards;
}

/* App Mockup UI Components */
.mock-card {
  background: var(--page-bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.dark .mock-card {
  background: var(--surface-muted);
}

.mock-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.mock-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 600;
}

.tag-periwinkle {
  background: var(--periwinkle-soft);
  color: var(--periwinkle-ink);
  border: 1px solid var(--periwinkle);
}

.tag-pink {
  background: var(--pink-soft);
  color: var(--pink-ink);
  border: 1px solid var(--pink);
}

.mock-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 0.25rem;
}

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

.mock-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.tree-flow {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.tree-node {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 0.75rem 1rem;
  border-radius: 12px;
}

.tree-node-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 8px;
  background: var(--periwinkle-soft);
  color: var(--periwinkle-ink);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- sections ---------- */

.section {
  padding: 6rem 0;
  background: var(--bg);
}

.section-muted {
  background: var(--surface-muted);
}

.dark .section-muted {
  background: #191c22;
}

.section-heading {
  text-align: center;
  margin-bottom: 4rem;
}

.section-heading h2 {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .section-heading h2 {
    font-size: 2.5rem;
  }
}

.section-heading p {
  color: var(--text-body);
  max-width: 42rem;
  margin: 0 auto 1rem;
  font-size: 1.0625rem;
}

.heading-rule {
  width: 4.5rem;
  height: 0.25rem;
  background: linear-gradient(90deg, var(--periwinkle) 0%, var(--pink) 100%);
  margin: 0 auto;
  border-radius: 9999px;
}

/* ---------- feature cards ---------- */

.card-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.feature-card {
  background: var(--surface);
  padding: 2rem;
  border-radius: 16px; /* FlowRadii.lg */
  border: 1px solid var(--border);
  box-shadow: var(--shadow-soft);
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-0.25rem);
  border-color: var(--periwinkle);
  box-shadow: var(--shadow-md);
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  border-radius: 12px; /* FlowRadii.md */
  background: var(--icon-tile-bg);
  color: var(--icon-tile-color);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: transform 0.3s ease;
}

/* Alternate icon tiles between periwinkle and pink accent for visual harmony */
.feature-card:nth-child(even) .feature-icon {
  background: var(--icon-tile-alt-bg);
  color: var(--icon-tile-alt-color);
}

.feature-card:hover .feature-icon {
  transform: scale(1.08);
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 0.75rem;
}

.feature-card p {
  color: var(--text-body);
  font-size: 0.875rem;
  line-height: 1.7;
  margin: 0;
}

/* ---------- highlight panel ---------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  box-shadow: var(--shadow-soft);
  padding: 2.5rem;
}

@media (min-width: 768px) {
  .panel {
    padding: 3.25rem;
  }
}

.panel h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .panel h2 {
    font-size: 2.125rem;
  }
}

.panel p {
  color: var(--text-body);
  margin: 0 0 1rem;
  line-height: 1.75;
}

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

.panel strong {
  color: var(--text-strong);
  font-weight: 600;
}

.panel-split {
  display: grid;
  gap: 2rem;
  align-items: center;
}

@media (min-width: 900px) {
  .panel-split {
    grid-template-columns: 1.15fr 1fr;
    gap: 3.5rem;
  }
}

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

.check-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  color: var(--text-body);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.check-list .material-symbols-outlined {
  color: var(--periwinkle-ink);
  font-size: 1.35rem;
  flex: none;
  margin-top: 0.1rem;
}

.dark .check-list .material-symbols-outlined {
  color: var(--periwinkle);
}

.check-list strong {
  color: var(--text-strong);
  font-weight: 600;
}

/* ---------- faq ---------- */

.faq-head {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  margin-bottom: 3rem;
  gap: 1rem;
}

@media (min-width: 768px) {
  .faq-head {
    flex-direction: row;
    align-items: flex-end;
  }
}

.faq-head h2 {
  font-family: var(--font-display);
  font-size: 2.125rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 0.5rem;
  letter-spacing: -0.02em;
}

.faq-head p {
  color: var(--text-muted);
  margin: 0;
}

.faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 1.25rem;
}

.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-strong);
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary .material-icons-round {
  color: var(--text-faint);
  transition: transform 0.3s ease;
  flex: none;
}

.faq-item[open] summary .material-icons-round {
  transform: rotate(180deg);
  color: var(--periwinkle-ink);
}

.faq-item .faq-answer {
  color: var(--text-body);
  margin-top: 0.75rem;
  line-height: 1.7;
}

.faq-item[open] .faq-answer {
  animation: fadeIn 0.2s ease-out forwards;
}

/* ---------- doc pages (privacy / support) ---------- */

.doc {
  padding: 8.5rem 0 6rem;
  background: var(--bg);
  min-height: 100vh;
}

.doc h1 {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 0 0 0.5rem;
  letter-spacing: -0.025em;
}

.doc .doc-meta {
  color: var(--text-body);
  margin: 0 0 2rem;
}

.doc h2 {
  font-family: var(--font-display);
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 2.25rem 0 1rem;
  scroll-margin-top: 7rem;
}

.doc h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-strong);
  margin: 1.75rem 0 0.5rem;
}

.doc p {
  color: var(--text-body);
  margin: 0 0 1rem;
}

.doc ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin: 0 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.doc li {
  color: var(--text-body);
}

.doc strong {
  color: var(--text-strong);
  font-weight: 600;
}

.doc a:not(.btn) {
  color: var(--periwinkle-ink);
  font-weight: 500;
}

.dark .doc a:not(.btn) {
  color: var(--periwinkle);
}

.doc a:not(.btn):hover {
  text-decoration: underline;
}

.toc {
  background: var(--surface-muted);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.toc p {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
  color: var(--text-muted);
}

.toc ol {
  margin: 0;
  padding-left: 1.25rem;
  columns: 2;
  column-gap: 2rem;
  font-size: 0.9375rem;
}

@media (max-width: 640px) {
  .toc ol {
    columns: 1;
  }
}

.toc li {
  margin-bottom: 0.375rem;
  break-inside: avoid;
}

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 0 0 1.5rem;
  border: 1px solid var(--border-strong);
  border-radius: 12px;
}

.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.doc th,
.doc td {
  text-align: left;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-strong);
  vertical-align: top;
}

.doc tbody tr:last-child th,
.doc tbody tr:last-child td {
  border-bottom: none;
}

.doc th {
  background: var(--surface-muted);
  color: var(--text-strong);
  font-weight: 600;
  font-family: var(--font-display);
}

.doc td {
  color: var(--text-body);
}

.contact-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow-soft);
  padding: 2rem;
  margin: 0 0 2.5rem;
}

.contact-card h3 {
  font-family: var(--font-display);
  margin: 0 0 0.25rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-strong);
}

.contact-card p {
  margin: 0;
  color: var(--text-body);
  font-size: 0.9375rem;
}

/* ---------- footer ---------- */

.site-footer {
  background: var(--footer-bg);
  border-top: 1px solid var(--border-strong);
  padding: 3.5rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    text-align: left;
  }
}

.footer-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

@media (min-width: 768px) {
  .footer-brand {
    align-items: flex-start;
  }
}

.footer-copy {
  font-size: 0.875rem;
  color: var(--text-faint);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links a {
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--primary-ink);
}

.dark .footer-links a:hover {
  color: var(--periwinkle);
}

.footer-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  max-width: 15.625rem;
}

@media (min-width: 768px) {
  .footer-cta {
    align-items: flex-end;
  }
}

.footer-cta .btn-store {
  padding: 0.5rem 1.25rem;
  box-shadow: var(--shadow-md);
}

.footer-cta .btn-store svg {
  width: 1.5rem;
  height: 1.5rem;
}

.footer-cta .store-kicker {
  font-size: 0.5625rem;
}

.footer-cta .store-name {
  font-size: 0.875rem;
}

.footer-note {
  font-size: 0.625rem;
  color: var(--text-muted);
  line-height: 1.3;
  text-align: center;
}

@media (min-width: 768px) {
  .footer-note {
    text-align: right;
  }
}

/* ---------- 404 ---------- */

.center-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 10rem 0 6rem;
}

.center-page h1 {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  color: var(--text-strong);
  margin: 0 0 1rem;
}

.center-page p {
  color: var(--text-body);
  font-size: 1.125rem;
  margin: 0 0 2rem;
}

/* ---------- motion ---------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}