/* ===================================================================
   NotenPilot – Liquid Glass Design System
   Inspired by Apple HIG / macOS 26 Liquid Glass
   =================================================================== */

/* ===== Custom Properties ===== */
:root {
  /* Brand – Petrol-Teal (matches the app) */
  --accent: #2A7B9B;
  --accent-light: #3A9BBB;
  --accent-dark: #1E5F78;
  --accent-subtle: rgba(42, 123, 155, 0.08);
  --accent-glow: rgba(42, 123, 155, 0.25);
  /* WCAG AA-konformer Text-Ton (≥ 6:1 auf --bg) – nur fuer Text/Icons, Flaechen behalten --accent */
  --accent-text: #1a5d7a;

  /* Semantic */
  --green: #1e8449;
  --green-light: #27ae60;
  --green-text: #15703a;

  /* Surfaces */
  --bg: #f5f5f7;
  --bg-elevated: #ffffff;
  --bg-alt: #f0f0f2;
  --bg-dark: #1d1d1f;
  --bg-dark-elevated: #2c2c2e;

  /* Text */
  --text: #1d1d1f;
  --text-secondary: #6e6e73;
  /* Tertiary AA-konform auf --bg (4.66:1) – optisch wie secondary, aber semantisch separat */
  --text-tertiary: #6e6e73;

  /* Glass */
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.06);
  --glass-shadow-hover: 0 2px 8px rgba(0, 0, 0, 0.06), 0 12px 32px rgba(0, 0, 0, 0.1);
  --glass-blur: blur(20px) saturate(180%);

  /* Layout */
  --radius: 16px;
  --radius-sm: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;

  /* Borders */
  --border: rgba(0, 0, 0, 0.06);
  --border-subtle: rgba(0, 0, 0, 0.04);

  /* Table */
  --table-border: rgba(0, 0, 0, 0.08);

  /* Typography */
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  --tracking-tight: -0.022em;
  --tracking-normal: -0.01em;

  /* Motion */
  --ease-spring: cubic-bezier(0.2, 0.9, 0.3, 1);
  --duration: 0.35s;
  --duration-fast: 0.2s;
}

[data-theme="dark"] {
  --accent: #3A9BBB;
  --accent-light: #5BB8D8;
  --accent-dark: #2A7B9B;
  --accent-subtle: rgba(58, 155, 187, 0.12);
  --accent-glow: rgba(58, 155, 187, 0.3);
  --accent-text: #5BB8D8;

  --green: #2ecc71;
  --green-light: #4ade80;
  --green-text: #4ade80;

  --bg: #000000;
  --bg-elevated: #1c1c1e;
  --bg-alt: #121214;
  --bg-dark: #000000;
  --bg-dark-elevated: #1c1c1e;

  --text: #f5f5f7;
  --text-secondary: #a1a1a6;
  --text-tertiary: #8e8e93;

  --glass-bg: rgba(28, 28, 30, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 1px 3px rgba(0, 0, 0, 0.2), 0 8px 24px rgba(0, 0, 0, 0.25);
  --glass-shadow-hover: 0 2px 8px rgba(0, 0, 0, 0.25), 0 12px 32px rgba(0, 0, 0, 0.35);

  --border: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.05);

  --table-border: rgba(255, 255, 255, 0.08);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; overflow-x: hidden; }
body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  letter-spacing: var(--tracking-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
body.menu-open { overflow: hidden; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: var(--accent-text); text-decoration: none; transition: color var(--duration-fast) ease; }
a:hover { color: var(--accent-light); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible, details:focus-visible {
  outline: 3px solid var(--accent-glow);
  outline-offset: 2px;
  border-radius: 6px;
}
ul { list-style: none; }

/* ===== Skip to Content ===== */
.skip-to-content {
  position: absolute; top: -100%; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; padding: 0.75rem 1.5rem;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  font-weight: 600; font-size: 0.95rem; z-index: 200;
  transition: top 0.2s ease;
}
.skip-to-content:focus { top: 0; outline: none; text-decoration: none; color: #fff; }

/* ===== Typography ===== */
h1 {
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  line-height: 1.1;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}
h3 { font-size: 1.2rem; font-weight: 600; letter-spacing: var(--tracking-normal); }

/* ===== Layout ===== */
.container { max-width: 1120px; margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5.5rem 0; }
.section--alt { background: var(--bg-alt); }
.section-title { text-align: center; margin-bottom: 0.75rem; }
.section-subtitle {
  text-align: center; color: var(--text-secondary);
  margin-bottom: 3.5rem; max-width: 620px;
  margin-left: auto; margin-right: auto;
  font-size: 1.125rem; line-height: 1.65;
}

/* ===== Header – Liquid Glass ===== */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
}
.header .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.logo {
  font-size: 1.25rem; font-weight: 700; color: var(--text);
  display: flex; align-items: center; gap: 0.5rem;
  letter-spacing: var(--tracking-tight);
}
.logo:hover { text-decoration: none; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 1.75rem; }
.nav-links a {
  color: var(--text-secondary); font-size: 0.9rem; font-weight: 500;
  transition: color var(--duration-fast) ease;
}
.nav-links a:hover { color: var(--text); text-decoration: none; }
.nav-links a.is-active { color: var(--accent-text); font-weight: 600; }
.nav-cta {
  background: var(--accent); color: #fff !important;
  padding: 0.45rem 1.1rem; border-radius: 980px;
  font-weight: 600; font-size: 0.85rem;
  transition: background var(--duration-fast) ease, transform var(--duration-fast) var(--ease-spring);
}
.nav-cta:hover { background: var(--accent-light); transform: scale(1.02); }

/* Hamburger */
.hamburger { display: none; background: none; border: none; cursor: pointer; padding: 0.5rem; }
.hamburger span {
  display: block; width: 22px; height: 2px; background: var(--text);
  margin: 5px 0; border-radius: 1px;
  transition: transform var(--duration) var(--ease-spring), opacity var(--duration-fast) ease;
}
.hamburger.is-open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(42, 123, 155, 0.2) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(58, 155, 187, 0.12) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
  color: var(--text);
  padding: 7rem 0 5rem;
  position: relative; overflow: hidden;
  text-align: center;
}
.hero h1 { margin-bottom: 1.25rem; }
.hero p {
  font-size: 1.2rem; color: var(--text-secondary);
  max-width: 600px; margin: 0 auto 1rem;
  line-height: 1.6;
}
.hero-buttons {
  display: flex; gap: 0.75rem; justify-content: center;
  flex-wrap: wrap; margin-top: 1.5rem;
}
.hero-price-hint {
  font-size: 0.9rem; color: var(--text-tertiary);
  margin-top: 1.25rem; margin-bottom: 0 !important;
}
.btn {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.8rem 1.6rem; border-radius: 980px;
  font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: none;
  transition: transform var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration) ease;
}
.btn:hover {
  transform: translateY(-1px) scale(1.02);
  text-decoration: none;
}
.btn--primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 2px 12px rgba(42, 123, 155, 0.3);
}
.btn--primary:hover {
  background: var(--accent-light); color: #fff;
  box-shadow: 0 4px 20px rgba(42, 123, 155, 0.4);
}
.btn--outline {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--glass-shadow);
}
.btn--outline:hover {
  color: var(--text);
  background: var(--bg-elevated);
  box-shadow: var(--glass-shadow-hover);
}
.hero-wave {
  position: absolute; bottom: -1px; left: 0; width: 100%;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: auto; display: block; }
.hero-wave svg path { fill: var(--bg); }

/* ===== Primary Features (alternating rows) ===== */
.feature-row {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 3.5rem;
  align-items: center; margin-bottom: 5rem;
}
.feature-row:last-of-type { margin-bottom: 0; }
.feature-row--reverse .feature-text { order: 2; }
.feature-row--reverse .feature-image { order: 1; }
.feature-text h3 {
  font-size: 1.5rem; margin-bottom: 0.75rem;
  color: var(--text); letter-spacing: var(--tracking-tight);
}
.feature-text p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.7; }
.feature-image {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--glass-shadow);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-subtle);
}
.feature-image img, .feature-image svg { max-width: 100%; max-height: 420px; width: auto; height: auto; }

/* ===== Secondary Features Grid – Glass Cards ===== */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem;
  margin-top: 4rem;
}
.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg); padding: 2rem 1.75rem;
  text-align: center;
  transition: transform var(--duration) var(--ease-spring),
              box-shadow var(--duration) ease,
              border-color var(--duration) ease;
  box-shadow: var(--glass-shadow);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
  border-color: var(--accent-glow);
}
.feature-card .icon { width: 52px; height: 52px; margin: 0 auto 1.25rem; }
.feature-card h3 { margin-bottom: 0.5rem; font-size: 1.1rem; }
.feature-card p { color: var(--text-secondary); font-size: 0.92rem; line-height: 1.6; }

/* ===== Privacy & Security Section ===== */
.privacy-section {
  background:
    radial-gradient(ellipse 70% 50% at 30% 80%, rgba(30, 132, 73, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg-dark) 0%, #0f1c24 100%);
  color: #fff;
}
.privacy-section .section-title { font-size: clamp(1.8rem, 3.5vw, 2.5rem); }
.privacy-section .section-subtitle { color: rgba(255, 255, 255, 0.88); max-width: 680px; }
.privacy-shield { text-align: center; margin-bottom: 1.25rem; }
.privacy-shield svg { width: 72px; height: 72px; margin: 0 auto; }

/* Security Banner – Glass on dark */
.security-banner {
  display: flex; align-items: flex-start; gap: 1.5rem;
  background: rgba(30, 132, 73, 0.1);
  border: 1px solid rgba(30, 132, 73, 0.2);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius); padding: 2rem;
  margin-bottom: 3rem; max-width: 800px; margin-left: auto; margin-right: auto;
}
.security-banner-icon { flex-shrink: 0; margin-top: 0.25rem; }
.security-banner-content h3 { font-size: 1.15rem; margin-bottom: 0.5rem; color: var(--green-light); }
.security-banner-content p { font-size: 0.95rem; color: rgba(255, 255, 255, 0.95); line-height: 1.7; }

/* Privacy Cards – Glass on dark */
.privacy-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.25rem;
}
.privacy-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius); padding: 1.5rem; text-align: center;
  transition: background var(--duration) ease, border-color var(--duration) ease,
              transform var(--duration) var(--ease-spring);
}
.privacy-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
}
.privacy-card .icon { width: 48px; height: 48px; margin: 0 auto 0.75rem; }
.privacy-card h3 { font-size: 1rem; margin-bottom: 0.4rem; }
.privacy-card p { font-size: 0.88rem; color: rgba(255, 255, 255, 0.92); line-height: 1.55; }

/* ===== App Store / CTA Section ===== */
.cta-section { text-align: center; background: var(--bg-alt); }
.cta-section .app-preview {
  max-width: 720px; margin: 2.5rem auto 0;
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow-hover);
  border: 1px solid var(--border-subtle);
}
.app-store-badge { height: 52px; margin: 0 auto; }
.cta-price-hint {
  text-align: center; color: var(--text-secondary); font-size: 1rem;
  font-weight: 500; margin-bottom: 2rem;
}

/* ===== FAQ Section ===== */
.faq-section .section-title { margin-bottom: 2.5rem; }
.faq-list { max-width: 720px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.6rem;
  background: var(--bg-elevated);
  overflow: hidden;
  transition: box-shadow var(--duration) ease;
}
.faq-item:hover { box-shadow: var(--glass-shadow); }
.faq-item summary {
  padding: 1.15rem 1.5rem; cursor: pointer;
  font-weight: 600; font-size: 1rem; color: var(--text);
  list-style: none;
  display: flex; align-items: center; justify-content: space-between;
  transition: background var(--duration-fast) ease;
}
.faq-item summary:hover { background: var(--accent-subtle); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::marker { display: none; content: ""; }
.faq-item summary::after {
  content: '+'; font-size: 1.3rem; font-weight: 300; color: var(--accent-text);
  transition: transform var(--duration) var(--ease-spring);
  flex-shrink: 0; margin-left: 1rem;
}
.faq-item[open] summary::after { content: '\2212'; }
.faq-item p {
  padding: 0 1.5rem 1.25rem; color: var(--text-secondary);
  font-size: 0.95rem; line-height: 1.7;
}

/* ===== Footer ===== */
.footer {
  background: var(--bg-dark); color: rgba(255, 255, 255, 0.88);
  padding: 2.5rem 0; text-align: center; font-size: 0.85rem;
}
.footer a { color: rgba(255, 255, 255, 0.95); transition: color var(--duration-fast) ease; }
.footer a:hover { color: #fff; }
.footer-links {
  display: flex; justify-content: center; gap: 1.5rem; margin-bottom: 0.75rem;
}

/* ===== Content Pages (Impressum, Datenschutz) ===== */
.content-page { max-width: 720px; margin: 0 auto; padding: 3.5rem 1.5rem; }
.content-page h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 0.5rem;
  letter-spacing: var(--tracking-tight);
}
.content-page .subtitle { color: var(--text-secondary); margin-bottom: 2.5rem; }
.content-page h2 {
  font-size: 1.35rem; margin-top: 2.5rem; margin-bottom: 0.75rem;
  color: var(--text);
}
.content-page h3 { margin-top: 1.5rem; margin-bottom: 0.5rem; }
.content-page p, .content-page li { margin-bottom: 0.75rem; color: var(--text-secondary); }
.content-page ul { padding-left: 1.5rem; list-style: disc; }
.content-page strong { color: var(--text); }
.content-page table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9rem; }
.content-page th, .content-page td { text-align: left; padding: 0.75rem; border-bottom: 1px solid var(--table-border); }
.content-page th { font-weight: 600; color: var(--text); background: var(--bg-alt); }
.content-page td { color: var(--text-secondary); }

/* ===== Breadcrumb ===== */
.breadcrumb { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--accent-text); }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb [aria-current="page"] { color: var(--text); }

/* ===== Content Page TOC ===== */
.content-toc {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}
.content-toc h2 { font-size: 1rem; margin: 0 0 0.75rem; color: var(--text); }
.content-toc ol { padding-left: 1.25rem; list-style: decimal; margin: 0; }
.content-toc li { margin-bottom: 0.3rem; }
.content-toc a { font-size: 0.9rem; color: var(--text-secondary); }
.content-toc a:hover { color: var(--accent-text); text-decoration: none; }

/* ===== Theme Toggle ===== */
.theme-toggle {
  background: none; border: none; cursor: pointer;
  padding: 0.4rem; color: var(--text-secondary);
  display: flex; align-items: center; justify-content: center;
  border-radius: 980px;
  transition: background var(--duration-fast) ease, color var(--duration-fast) ease;
}
.theme-toggle:hover { background: var(--accent-subtle); color: var(--text); }
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: block; }

/* ===== Dark Mode Overrides ===== */
[data-theme="dark"] .header {
  background: rgba(0, 0, 0, 0.72);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}
[data-theme="dark"] .hero {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(42, 123, 155, 0.15) 0%, transparent 70%),
    radial-gradient(ellipse 60% 50% at 80% 20%, rgba(58, 155, 187, 0.08) 0%, transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}
[data-theme="dark"] .hero-wave svg path { fill: var(--bg); }
[data-theme="dark"] .feature-image {
  border-color: rgba(255, 255, 255, 0.06);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
}
[data-theme="dark"] .feature-card {
  background: rgba(28, 28, 30, 0.6);
  border-color: rgba(255, 255, 255, 0.06);
}
[data-theme="dark"] .faq-item {
  background: var(--bg-elevated);
  border-color: var(--border);
}
[data-theme="dark"] .btn--outline {
  background: rgba(28, 28, 30, 0.6);
  border-color: rgba(255, 255, 255, 0.1);
}

@media (max-width: 768px) {
  [data-theme="dark"] .nav-links {
    background: rgba(0, 0, 0, 0.92);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
  }
}

/* ===== Contact Form ===== */
.contact-hint {
  margin-bottom: 1.5rem; color: var(--text-secondary); font-size: 0.95rem;
}
.contact-form { max-width: 600px; margin-bottom: 3rem; }
.form-group { margin-bottom: 1rem; }
.form-group label {
  display: block; margin-bottom: 0.35rem;
  font-weight: 600; font-size: 0.9rem; color: var(--text);
}
.form-group input,
.form-group textarea {
  width: 100%; padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated); color: var(--text);
  font-family: inherit; font-size: 1rem;
  transition: border-color var(--duration-fast) ease, box-shadow var(--duration-fast) ease;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}
.form-group textarea { resize: vertical; }
.contact-form .btn { background: var(--accent); color: #fff; }
.contact-form .btn:hover { background: var(--accent-light); }

/* ===== Scroll Animations =====
   Initial sichtbar fuer Suchmaschinen, Lighthouse Speed Index und JS-off.
   Animations werden nur ausgeloest wenn data-anim="on" gesetzt ist
   (vom Inline-Script direkt vor First Paint).
*/
.animate-on-scroll { opacity: 1; transform: none; transition: opacity 0.7s var(--ease-spring), transform 0.7s var(--ease-spring); }
[data-anim="on"] .animate-on-scroll { opacity: 0; transform: translateY(20px); }
[data-anim="on"] .animate-on-scroll.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  [data-anim="on"] .animate-on-scroll { opacity: 1; transform: none; transition: none; }
}

/* ===== Support Page ===== */
.support-hero {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(42, 123, 155, 0.15) 0%, transparent 70%),
    var(--bg);
  color: var(--text); padding: 3.5rem 0; text-align: center;
}
.support-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.5rem); margin-bottom: 0.5rem;
  letter-spacing: var(--tracking-tight);
}
.support-hero p { color: var(--text-secondary); font-size: 1.1rem; max-width: 550px; margin: 0 auto; }

.support-toc {
  max-width: 900px; margin: 0 auto; padding: 2rem 1.5rem;
}
.support-toc h2 { font-size: 1.15rem; margin-bottom: 1rem; }
.support-toc-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 0.25rem 2rem;
}
.support-toc a {
  display: block; padding: 0.5rem 0; font-size: 0.95rem;
  color: var(--text-secondary); border-bottom: 1px solid var(--border-subtle);
  transition: color var(--duration-fast) ease;
}
.support-toc a:hover { color: var(--accent-text); text-decoration: none; }

@media (max-width: 768px) {
  .support-toc-grid { grid-template-columns: 1fr; }
}

/* FAQ Categories */
.faq-category { margin-bottom: 2.5rem; }
.faq-category h3 {
  font-size: 1.1rem; margin-bottom: 1rem; color: var(--accent-text);
  padding-bottom: 0.5rem; border-bottom: 1px solid var(--border);
}

/* Guide Section */
.guide-section {
  max-width: 900px; margin: 0 auto; padding: 0 1.5rem;
}
.guide-section h2 {
  font-size: 1.35rem; margin-top: 3.5rem; margin-bottom: 0.75rem;
  color: var(--text); padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}
.guide-section h3 { margin-top: 1.75rem; margin-bottom: 0.5rem; }
.guide-section h4 { margin-top: 1rem; margin-bottom: 0.4rem; font-size: 1rem; }
.guide-section p, .guide-section li {
  margin-bottom: 0.75rem; color: var(--text-secondary); line-height: 1.75;
}
.guide-section ul, .guide-section ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.guide-section ul { list-style: disc; }
.guide-section ol { list-style: decimal; }
.guide-section strong { color: var(--text); }
.guide-section table {
  width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.9rem;
  border-radius: var(--radius-sm); overflow: hidden;
}
.guide-section th, .guide-section td {
  text-align: left; padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--table-border);
}
.guide-section th { font-weight: 600; color: var(--text); background: var(--bg-alt); }
.guide-section td { color: var(--text-secondary); }
.guide-section code {
  background: var(--accent-subtle); color: var(--accent-text);
  padding: 0.15em 0.4em; border-radius: 5px; font-size: 0.88em;
}

/* Callout boxes – Glass style */
.callout {
  background: var(--accent-subtle);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem; margin: 1.25rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.95rem; color: var(--text-secondary); line-height: 1.7;
}
.callout strong { color: var(--text); }
.callout--warning {
  background: rgba(230, 126, 34, 0.08);
  border-left-color: #e67e22;
}

/* Theme-aware screenshots */
.screenshot-light { display: block; }
.screenshot-dark { display: none; }
[data-theme="dark"] .screenshot-light { display: none; }
[data-theme="dark"] .screenshot-dark { display: block; }

/* Guide screenshots */
.guide-screenshot {
  max-width: 100%; margin: 1.5rem auto;
  border-radius: var(--radius); box-shadow: var(--glass-shadow);
  border: 1px solid var(--border-subtle);
}

/* Feature screenshots */
.feature-image .screenshot-light,
.feature-image .screenshot-dark {
  max-width: 100%; max-height: 420px; width: auto; height: auto;
  border-radius: var(--radius);
}

/* Support page FAQ link */
.faq-more-link { text-align: center; margin-top: 2rem; font-size: 1.05rem; }
.faq-more-link a { font-weight: 600; }

/* ===== Lightbox ===== */
.lightbox-overlay {
  position: fixed; inset: 0; z-index: 200;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
  display: flex; align-items: center; justify-content: center;
  cursor: zoom-out;
  opacity: 0; pointer-events: none;
  transition: opacity 0.3s ease;
}
.lightbox-overlay.is-visible { opacity: 1; pointer-events: all; }
.lightbox-overlay img {
  max-width: 92vw; max-height: 90vh;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
  object-fit: contain;
  transform: scale(0.92);
  transition: transform 0.35s var(--ease-spring);
}
.lightbox-overlay.is-visible img { transform: scale(1); }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .feature-row { gap: 2.5rem; }
  .feature-image img, .feature-image svg,
  .feature-image .screenshot-light,
  .feature-image .screenshot-dark { max-height: 340px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-grid { grid-template-columns: repeat(2, 1fr); }
  .security-banner { flex-direction: column; align-items: center; text-align: center; }
}

@media (max-width: 768px) {
  .nav-links {
    position: absolute; top: 56px; left: 0; right: 0;
    height: calc(100vh - 56px);
    height: calc(100dvh - 56px);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    flex-direction: column; align-items: center; justify-content: center; gap: 2rem;
    opacity: 0; pointer-events: none;
    transition: opacity var(--duration) ease;
    z-index: 99;
  }
  .nav-links.is-open { display: flex; opacity: 1; pointer-events: all; }
  .nav-links a { font-size: 1.15rem; }
  .hamburger { display: block; z-index: 101; }

  .hero { padding: 4rem 0 3.5rem; }
  .feature-row { grid-template-columns: 1fr; gap: 2rem; margin-bottom: 3.5rem; }
  .feature-image img, .feature-image svg,
  .feature-image .screenshot-light,
  .feature-image .screenshot-dark { max-height: none; width: 100%; }
  .feature-row--reverse .feature-text { order: 1; }
  .feature-row--reverse .feature-image { order: 2; }
  .features-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .privacy-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .security-banner { padding: 1.5rem; }
  .section { padding: 4rem 0; }

  .faq-item summary { font-size: 0.95rem; padding: 1rem 1.25rem; }
  .faq-item p { padding: 0 1.25rem 1rem; }

  .content-page table, .guide-section table { display: block; overflow-x: auto; }
}

@media (max-width: 480px) {
  .features-grid { grid-template-columns: 1fr; }
  .privacy-grid { grid-template-columns: 1fr; }
}


/* ===== App Store Badges – Dual Platform ===== */
.appstore-badges {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  align-items: flex-end;
  flex-wrap: wrap;
}
.appstore-badge-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
}
.appstore-badge-link {
  display: inline-block;
  border-radius: 9px;
  transition: opacity var(--duration-fast) ease, transform var(--duration-fast) var(--ease-spring);
}
.appstore-badge-link:hover {
  opacity: 0.82;
  transform: translateY(-2px) scale(1.025);
}
.appstore-badge-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.01em;
}
.app-store-badge {
  height: 52px;
  display: block;
  border-radius: 9px;
}