/* ============================================================
   Meteal App Website — Main Stylesheet
   ============================================================ */

/* ── Google Fonts are loaded in HTML ── */

/* ── CSS Custom Properties ── */
:root {
  /* Colors */
  --color-bg: #F7F9FC;
  --color-header: #1B2B4B;
  --color-accent: #4A90D9;
  --color-accent-hover: #3578c0;
  --color-accent-light: rgba(74, 144, 217, 0.12);
  --color-text: #2C3E50;
  --color-text-muted: #6B7E95;
  --color-text-light: #98A9BC;
  --color-card: #FFFFFF;
  --color-border: #E4ECF4;
  --color-footer-bg: #101e33;
  --color-footer-text: #9ab0c8;

  /* Shadows */
  --shadow-card: 0 2px 16px rgba(27, 43, 75, 0.08);
  --shadow-card-hover: 0 8px 32px rgba(27, 43, 75, 0.14);
  --shadow-header: 0 2px 12px rgba(27, 43, 75, 0.15);

  /* Typography */
  --font-main: 'Inter', 'Noto Sans KR', sans-serif;
  --font-size-base: 16px;
  --line-height-base: 1.7;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Border radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.35s ease;

  /* Layout */
  --container-max: 1100px;
  --header-height: 64px;
}

html.i18n-loading [data-i18n],
html.i18n-loading [data-i18n-html],
html.i18n-loading [data-i18n-placeholder],
html.i18n-loading [data-i18n-title] {
  visibility: hidden;
}

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

html {
  scroll-behavior: smooth;
  font-size: var(--font-size-base);
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-accent-hover);
}

ul {
  list-style: none;
}

/* ── Container ── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* ── Header ── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-header);
  height: var(--header-height);
  transition: background var(--transition-slow), box-shadow var(--transition-slow);
}

header.scrolled {
  background: rgba(27, 43, 75, 0.97);
  box-shadow: var(--shadow-header);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

nav {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  object-fit: cover;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex: 1;
  justify-content: center;
}

.nav-links a {
  color: rgba(255,255,255,0.78);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-full);
  transition: color var(--transition-base), background var(--transition-base);
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
  background: rgba(255,255,255,0.12);
}

/* ── Language Selector ── */
.lang-selector {
  position: relative;
  flex-shrink: 0;
}

.lang-btn {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.9);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  font-size: 0.85rem;
  font-family: var(--font-main);
  font-weight: 500;
  transition: background var(--transition-base), border-color var(--transition-base);
  white-space: nowrap;
}

.lang-btn:hover {
  background: rgba(255,255,255,0.2);
  border-color: rgba(255,255,255,0.35);
}

.lang-btn .chevron {
  font-size: 0.65rem;
  transition: transform var(--transition-base);
}

.lang-selector.open .chevron {
  transform: rotate(180deg);
}

.lang-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 30px rgba(27, 43, 75, 0.15);
  min-width: 160px;
  overflow: hidden;
  z-index: 200;
  animation: dropdownIn var(--transition-base) ease;
}

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

.lang-selector.open .lang-dropdown {
  display: block;
}

.lang-dropdown button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.6rem 1rem;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.875rem;
  color: var(--color-text);
  transition: background var(--transition-fast);
  text-align: left;
}

.lang-dropdown button:hover {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.lang-dropdown button.active {
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-weight: 600;
}

/* ── Hero Section ── */
.hero {
  background: var(--color-header);
  color: #ffffff;
  padding: var(--spacing-3xl) var(--spacing-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 30% 40%, rgba(74,144,217,0.15) 0%, transparent 70%),
    radial-gradient(ellipse 50% 60% at 75% 60%, rgba(74,144,217,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--container-max);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.hero-icon {
  width: 100px;
  height: 100px;
  border-radius: 22px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
  animation: heroIconFloat 4s ease-in-out infinite;
}

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

.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,0.72);
  max-width: 500px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(74,144,217,0.25);
  border: 1px solid rgba(74,144,217,0.4);
  border-radius: var(--radius-full);
  padding: 0.3rem 0.9rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.85);
  letter-spacing: 0.02em;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-sm);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--color-accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(74, 144, 217, 0.4);
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(74, 144, 217, 0.5);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  color: rgba(255,255,255,0.85);
  border: 1.5px solid rgba(255,255,255,0.35);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-disabled,
.btn[disabled] {
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.4);
  border: 1.5px solid rgba(255,255,255,0.15);
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-base);
  min-width: 170px;
}

.store-btn .store-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.store-btn .store-text {
  display: flex;
  flex-direction: column;
  text-align: left;
  line-height: 1.2;
}

.store-btn .store-text small {
  font-size: 0.7rem;
  font-weight: 400;
  opacity: 0.8;
}

.store-btn .store-text span {
  font-size: 0.95rem;
}

/* ── Features Section ── */
.features {
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

.section-header p {
  margin-top: 0.5rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section-label {
  display: inline-block;
  background: var(--color-accent-light);
  color: var(--color-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 0.75rem;
}

.features-grid {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl) var(--spacing-lg);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  line-height: 1;
}

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Data Sources Section ── */
.data-sources {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.data-sources-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  text-align: center;
}

.data-sources-inner p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-lg);
}

.data-source-cards {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
}

.data-source-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.4rem;
  font-size: 0.875rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-base);
}

.data-source-card:hover {
  border-color: var(--color-accent);
  background: var(--color-accent-light);
  color: var(--color-accent);
  text-decoration: none;
}

.data-source-card .ds-icon {
  font-size: 1.2rem;
}

/* ── Footer ── */
footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.footer-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--spacing-xl);
  align-items: start;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #ffffff;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.footer-brand img {
  width: 24px;
  height: 24px;
  border-radius: 5px;
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--color-footer-text);
  margin-top: 0.4rem;
}

.footer-email {
  font-size: 0.82rem;
  margin-top: 0.25rem;
}

.footer-email a {
  color: rgba(74,144,217,0.85);
}

.footer-email a:hover {
  color: var(--color-accent);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  text-align: right;
}

.footer-links a {
  color: var(--color-footer-text);
  font-size: 0.875rem;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: #ffffff;
}

.footer-divider {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin: var(--spacing-lg) 0 var(--spacing-md);
  grid-column: 1 / -1;
}

/* ── Page Hero (inner pages) ── */
.page-hero {
  background: var(--color-header);
  color: #ffffff;
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.page-hero-inner {
  max-width: var(--container-max);
  margin: 0 auto;
}

.page-hero h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.page-hero p {
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  margin-top: 0.4rem;
}

.page-hero .breadcrumb {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-bottom: 0.6rem;
}

.page-hero .breadcrumb a {
  color: rgba(255,255,255,0.5);
}

.page-hero .breadcrumb a:hover {
  color: rgba(255,255,255,0.85);
}

/* ── Page Content ── */
.page-content {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--spacing-2xl) var(--spacing-xl);
}

/* ── Sections within page ── */
.content-section {
  margin-bottom: var(--spacing-2xl);
  background: var(--color-card);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.content-section h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--spacing-md);
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-accent-light);
  letter-spacing: -0.01em;
}

.content-section h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.content-section p {
  color: var(--color-text-muted);
  font-size: 0.925rem;
  line-height: 1.75;
  margin-bottom: var(--spacing-md);
}

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

.content-section ul, 
.content-section ol {
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.925rem;
  line-height: 1.75;
}

.content-section li {
  list-style: disc;
  margin-bottom: 0.4rem;
}

.content-section ol li {
  list-style: decimal;
}

/* ── Guide tabs ── */
.guide-tabs {
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding: 0 0 var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  scrollbar-width: thin;
}

.guide-tab {
  flex: 0 0 auto;
  border: 1px solid var(--color-border);
  background: var(--color-card);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
  padding: 0.65rem 1rem;
  font-family: var(--font-main);
  font-size: 0.9rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
  white-space: nowrap;
}

.guide-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.guide-tab.active {
  background: var(--color-header);
  border-color: var(--color-header);
  color: #ffffff;
  box-shadow: var(--shadow-card);
}

.guide-panel[hidden] {
  display: none;
}

.guide-panel .content-section:last-child {
  margin-bottom: 0;
}

.guide-media-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-lg);
  margin: var(--spacing-md) 0 var(--spacing-lg);
}

.guide-media {
  margin: var(--spacing-md) 0;
}

.guide-media img {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  box-shadow: var(--shadow-card);
}

.guide-media figcaption {
  margin-top: 0.55rem;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

/* ── Tables ── */
.table-wrap {
  overflow-x: auto;
  margin: var(--spacing-md) 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead tr {
  background: var(--color-header);
  color: rgba(255,255,255,0.9);
}

thead th {
  padding: 0.8rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-fast);
}

tbody tr:last-child {
  border-bottom: none;
}

tbody tr:hover {
  background: var(--color-accent-light);
}

tbody td {
  padding: 0.75rem 1rem;
  color: var(--color-text-muted);
  vertical-align: top;
}

tbody td:first-child {
  color: var(--color-text);
  font-weight: 500;
}

/* ── Callout / Info Boxes ── */
.callout {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: var(--spacing-md) 0;
}

.callout-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.callout-info {
  background: var(--color-accent-light);
  border-left: 3px solid var(--color-accent);
  color: var(--color-text);
}

.callout-warn {
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid #f59e0b;
  color: var(--color-text);
}

.callout-note {
  background: rgba(107, 126, 149, 0.08);
  border-left: 3px solid var(--color-text-muted);
  color: var(--color-text-muted);
}

/* ── License Cards ── */
.lib-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.lib-table th {
  background: #f0f4fa;
  color: var(--color-text);
  font-weight: 600;
  padding: 0.65rem 1rem;
  text-align: left;
  border-bottom: 2px solid var(--color-border);
}

.lib-table td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-muted);
  vertical-align: middle;
}

.lib-table td:first-child {
  font-weight: 600;
  color: var(--color-text);
  font-family: 'Courier New', monospace;
  font-size: 0.82rem;
}

.lib-table tr:last-child td {
  border-bottom: none;
}

.lib-table tr:hover td {
  background: var(--color-accent-light);
}

.license-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.badge-bsd {
  background: rgba(74,144,217,0.12);
  color: #2a72b5;
}

.badge-mit {
  background: rgba(16, 185, 129, 0.12);
  color: #059669;
}

.badge-apache {
  background: rgba(245,158,11,0.12);
  color: #b45309;
}

/* ── App Info Cards ── */
.app-info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  margin: var(--spacing-md) 0;
}

.info-chip {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  font-size: 0.875rem;
}

.info-chip .chip-label {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.info-chip .chip-value {
  color: var(--color-text);
  font-weight: 600;
}

/* ── Privacy specific ── */
.privacy-updated {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(74,144,217,0.1);
  color: var(--color-accent);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
}

.third-party-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.third-party-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  transition: border-color var(--transition-base);
}

.third-party-item:hover {
  border-color: var(--color-accent);
}

.third-party-item a {
  font-size: 0.8rem;
  color: var(--color-accent);
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-inner {
    grid-template-columns: 1fr;
  }
  .footer-links {
    text-align: left;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem;
  }
  .app-info-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  :root {
    --spacing-xl: 1.25rem;
    --spacing-2xl: 2rem;
    --spacing-3xl: 2.5rem;
  }

  nav {
    padding: 0 var(--spacing-md);
    gap: var(--spacing-md);
  }

  .nav-links {
    display: none;
  }

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

  .hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

  .store-btn {
    width: 100%;
    max-width: 260px;
    justify-content: center;
  }

  .page-content {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .content-section {
    padding: var(--spacing-lg);
  }

  .guide-tabs {
    margin-left: calc(var(--spacing-md) * -1);
    margin-right: calc(var(--spacing-md) * -1);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
  }

  .guide-tab {
    padding: 0.58rem 0.85rem;
    font-size: 0.84rem;
  }

  .guide-media-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
}

/* Mobile nav toggle */
.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: rgba(255,255,255,0.85);
  cursor: pointer;
  font-size: 1.4rem;
  padding: 0.25rem;
}

@media (max-width: 680px) {
  .nav-mobile-toggle {
    display: flex;
    align-items: center;
  }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-header);
    padding: var(--spacing-md);
    gap: 0.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    z-index: 99;
  }

  .nav-links.open a {
    padding: 0.65rem 1rem;
    border-radius: var(--radius-md);
  }
}

/* ── Print styles ── */
@media print {
  header, footer, .hero-buttons, .lang-selector {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .content-section {
    box-shadow: none;
    border: 1px solid #ccc;
    break-inside: avoid;
  }

  a::after {
    content: ' (' attr(href) ')';
    font-size: 0.75em;
    color: #555;
  }
}

/* ── Utilities ── */
.text-muted { color: var(--color-text-muted); }
.text-center { text-align: center; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-md { margin-bottom: var(--spacing-md); }
.fw-bold { font-weight: 700; }