/* ============================================
   Notepad++ for macOS — Main Stylesheet
   Modern macOS-inspired design
   ============================================ */

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

:root {
  /* macOS Green accent (matches chameleon mascot) */
  --color-primary: #34C759;
  --color-primary-hover: #2AAE4A;
  --color-primary-light: rgba(52, 199, 89, 0.12);
  --color-primary-ring: rgba(52, 199, 89, 0.25);

  /* Surfaces */
  --color-bg: #f5f5f7;
  --color-surface: #ffffff;
  --color-surface-elevated: #ffffff;
  --color-surface-hover: #fafafa;

  /* Text */
  --color-text: #1d1d1f;
  --color-text-secondary: #86868b;
  --color-text-tertiary: #aeaeb2;

  /* Borders & Shadows */
  --color-border: rgba(0, 0, 0, 0.08);
  --color-border-strong: rgba(0, 0, 0, 0.12);
  --color-shadow: rgba(0, 0, 0, 0.04);
  --color-shadow-heavy: rgba(0, 0, 0, 0.12);

  /* Navigation glass */
  --nav-bg: rgba(245, 245, 247, 0.72);
  --nav-border: rgba(0, 0, 0, 0.06);

  /* Misc */
  --color-code-bg: #f0f0f2;
  --color-badge-bg: rgba(52, 199, 89, 0.12);
  --color-badge-text: #1b8c34;

  /* Layout */
  --nav-height: 52px;
  --max-width: 1120px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 150ms var(--ease-out);
  --transition-normal: 250ms var(--ease-out);
  --transition-slow: 400ms var(--ease-out);

  /* Font */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, monospace;
}

/* --- Dark Theme --- */
[data-theme="dark"] {
  --color-bg: #000000;
  --color-surface: #1c1c1e;
  --color-surface-elevated: #2c2c2e;
  --color-surface-hover: #252527;

  --color-text: #f5f5f7;
  --color-text-secondary: #98989d;
  --color-text-tertiary: #636366;

  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.12);
  --color-shadow: rgba(0, 0, 0, 0.2);
  --color-shadow-heavy: rgba(0, 0, 0, 0.4);

  --nav-bg: rgba(0, 0, 0, 0.72);
  --nav-border: rgba(255, 255, 255, 0.06);

  --color-code-bg: #2c2c2e;
  --color-badge-bg: rgba(52, 199, 89, 0.18);
  --color-badge-text: #4cd964;

  --color-primary-light: rgba(52, 199, 89, 0.18);
}

/* --- Global --- */
html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  transition: background var(--transition-normal), color var(--transition-normal);
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--color-text);
}
h1 { font-size: 2.75rem; font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: 1.875rem; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.125rem; }

p { color: var(--color-text-secondary); }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 0.5px solid var(--nav-border);
  transition: background var(--transition-normal);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-text);
  flex-shrink: 0;
}
.nav-logo img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
}
.nav-logo-text {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.nav-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-links a {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
}
.nav-links a:hover {
  color: var(--color-text);
  background: var(--color-border);
}
.nav-links a.active {
  color: var(--color-text);
  background: var(--color-border-strong);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

/* Theme toggle button */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.theme-toggle:hover {
  background: var(--color-border);
  color: var(--color-text);
}
.theme-toggle svg { width: 18px; height: 18px; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

/* Mobile menu button */
.mobile-menu-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.mobile-menu-btn:hover {
  background: var(--color-border);
  color: var(--color-text);
}
.mobile-menu-btn svg { width: 20px; height: 20px; }

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 99;
  background: var(--color-bg);
  padding: 16px 24px;
  opacity: 0;
  transform: translateY(-8px);
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}
.mobile-menu.open {
  display: block;
  opacity: 1;
  transform: translateY(0);
}
.mobile-menu a {
  display: flex;
  align-items: center;
  padding: 14px 16px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  text-decoration: none;
}
.mobile-menu a:hover {
  background: var(--color-border);
}
.mobile-menu a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

/* --- Ambient background orbs (full page) --- */
body {
  position: relative;
}
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
}
body::before {
  width: 600px;
  height: 600px;
  background: rgba(52, 199, 89, 0.25);
  top: -100px;
  left: -100px;
}
body::after {
  width: 500px;
  height: 500px;
  background: rgba(88, 86, 214, 0.15);
  bottom: -100px;
  right: -100px;
}
[data-theme="dark"] body::before { opacity: 0.15; }
[data-theme="dark"] body::after { opacity: 0.08; }

/* --- Hero Section --- */
.hero {
  padding-top: calc(var(--nav-height) + 56px);
  padding-bottom: 48px;
  text-align: center;
  position: relative;
}

.hero-logo {
  width: 150px;
  height: 150px;
  border-radius: 33px;
  margin: 0 auto 28px;
  filter: drop-shadow(0 8px 24px rgba(0,0,0,0.1));
  transition: transform var(--transition-normal);
}
.hero-logo:hover {
  transform: scale(1.05) translateY(-2px);
}

.hero h1 {
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin: 0 auto 0;
  line-height: 1.5;
}
.hero-subtitle:last-of-type {
  margin-bottom: 80px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

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

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.9375rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 12px rgba(52, 199, 89, 0.25);
}
.btn-primary:hover {
  background: var(--color-primary-hover);
  color: #fff;
  box-shadow: 0 4px 20px rgba(52, 199, 89, 0.35);
}

.btn-secondary {
  background: var(--color-surface-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.btn-secondary:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-ring);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-primary-light);
  color: var(--color-badge-text);
}
.btn-secondary:hover {
  background: var(--color-primary-ring);
  transform: translateY(-1px);
}

.btn-outline {
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border-strong);
}
.btn-outline:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-text-tertiary);
  color: var(--color-text);
  transform: translateY(-1px);
}

/* --- Screenshot Window --- */
.screenshot-section {
  padding: 0 24px 40px;
  max-width: 920px;
  margin: 0 auto;
}

.carousel-track {
  position: relative;
  width: 100%;
}
.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}
.carousel-slide.active {
  position: relative;
  opacity: 1;
  pointer-events: auto;
}

.screenshot-img {
  width: 100%;
  border-radius: 10px;
  filter:
    drop-shadow(0 2px 4px rgba(0,0,0,0.10))
    drop-shadow(0 8px 16px rgba(0,0,0,0.14))
    drop-shadow(0 24px 48px rgba(0,0,0,0.18));
}
[data-theme="dark"] .screenshot-img {
  filter:
    drop-shadow(0 2px 4px rgba(255,255,255,0.04))
    drop-shadow(0 8px 16px rgba(255,255,255,0.06))
    drop-shadow(0 24px 48px rgba(255,255,255,0.08));
}

/* --- Features Grid --- */
.features-section {
  padding: 40px 0 80px;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}
.section-header h2 {
  margin-bottom: 12px;
}
.section-header p {
  font-size: 1.0625rem;
  max-width: 560px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}
.feature-card:hover {
  border-color: var(--color-primary-ring);
  box-shadow: 0 4px 24px var(--color-shadow);
  transform: translateY(-2px);
}

.feature-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  color: var(--color-primary);
  font-size: 1.25rem;
}

.feature-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 0.9375rem;
  line-height: 1.55;
}

/* --- What Is Section --- */
.about-section {
  padding: 80px 0;
  border-top: 1px solid var(--color-border);
}

.about-content {
  max-width: 720px;
  margin: 0 auto;
}
.about-content h2 {
  margin-bottom: 20px;
}
.about-content p {
  font-size: 1.0625rem;
  line-height: 1.7;
  margin-bottom: 16px;
}
.about-content p:last-child { margin-bottom: 0; }

/* --- Content Pages (Download, Help, Resources, About, Author) --- */
.page-content {
  padding-top: calc(var(--nav-height) + 48px);
  padding-bottom: 80px;
  flex: 1;
}

.page-header {
  margin-bottom: 48px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}
.page-header h1 {
  font-size: 2.25rem;
  margin-bottom: 8px;
}
.page-header p {
  font-size: 1.0625rem;
}

/* Content cards */
.content-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 24px;
  transition: border-color var(--transition-fast);
}
.content-card:hover {
  border-color: var(--color-border-strong);
}
.content-card h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.content-card h3 {
  font-size: 1.125rem;
  margin-bottom: 12px;
  color: var(--color-text);
}
.content-card p {
  margin-bottom: 12px;
  line-height: 1.65;
}
.content-card p:last-child { margin-bottom: 0; }
.content-card ul, .content-card ol {
  margin: 12px 0;
  padding-left: 24px;
  color: var(--color-text-secondary);
}
.content-card li {
  margin-bottom: 8px;
  line-height: 1.55;
}
.content-card li a {
  font-weight: 500;
}

/* Download version cards */
.version-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 24px;
  transition: border-color var(--transition-fast);
}
.version-card:hover {
  border-color: var(--color-primary-ring);
}

.version-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  gap: 16px;
  flex-wrap: wrap;
}
.version-header h2 {
  font-size: 1.375rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.version-body {
  padding: 0 32px 24px;
}
.version-body h3 {
  font-size: 1rem;
  margin-bottom: 12px;
  color: var(--color-text);
}
.version-body ul {
  padding-left: 20px;
  color: var(--color-text-secondary);
}
.version-body li {
  margin-bottom: 6px;
  line-height: 1.5;
  font-size: 0.9375rem;
}

.version-footer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 20px 32px;
  border-top: 1px solid var(--color-border);
  background: var(--color-surface-hover);
  flex-wrap: wrap;
}

/* System requirements */
.sys-req {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}
.sys-req-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.sys-req-item .req-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: 1.125rem;
}
.sys-req-item .req-text strong {
  display: block;
  font-size: 0.875rem;
  margin-bottom: 2px;
  color: var(--color-text);
}
.sys-req-item .req-text span {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Help resource links */
.help-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}

.help-card {
  display: block;
  padding: 28px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all var(--transition-normal);
}
.help-card:hover {
  border-color: var(--color-primary-ring);
  box-shadow: 0 4px 20px var(--color-shadow);
  transform: translateY(-2px);
}
.help-card .help-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-light);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  font-size: 1.25rem;
}
.help-card h3 {
  font-size: 1.0625rem;
  margin-bottom: 8px;
  color: var(--color-text);
}
.help-card p {
  font-size: 0.9375rem;
  line-height: 1.5;
}
.help-card .help-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
}

/* Author profile cards */
.author-card {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}
.author-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-xl);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  flex-shrink: 0;
}
.author-info h3 {
  font-size: 1.375rem;
  margin-bottom: 4px;
}
.author-info .author-role {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}
.author-info p {
  margin-bottom: 12px;
  font-size: 0.9375rem;
  line-height: 1.6;
}
.author-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.author-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  background: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}
.author-link:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-ring);
  background: var(--color-primary-light);
}

/* Compatibility badges */
.compat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 16px 0;
}
.compat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
}
.compat-icon {
  font-size: 1.5rem;
}
.compat-text strong {
  display: block;
  font-size: 0.875rem;
  color: var(--color-text);
}
.compat-text span {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
}

/* Inline code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 2px 6px;
  background: var(--color-code-bg);
  border-radius: 4px;
}

/* Status pill */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
}
.status-pill.stable {
  background: var(--color-badge-bg);
  color: var(--color-badge-text);
}
.status-pill.beta {
  background: rgba(255, 159, 10, 0.12);
  color: #cc7700;
}
[data-theme="dark"] .status-pill.beta {
  color: #ffb340;
}

/* --- Footer --- */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-left img {
  width: 24px;
  height: 24px;
  border-radius: 6px;
  opacity: 0.6;
}
.footer-left span {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
}

.footer-links {
  display: flex;
  gap: 20px;
}
.footer-links a {
  font-size: 0.8125rem;
  color: var(--color-text-tertiary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: var(--color-text-secondary); }

/* --- Responsive --- */
@media (max-width: 768px) {
  :root { --nav-height: 48px; }

  .nav-links { display: none; }
  .mobile-menu-btn { display: flex; }

  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .hero {
    padding-top: calc(var(--nav-height) + 48px);
    padding-bottom: 40px;
  }
  .hero-logo { width: 80px; height: 80px; border-radius: 18px; margin-bottom: 20px; }
  .hero-subtitle { font-size: 1.0625rem; }

  .screenshot-section { padding: 0 16px 60px; }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .feature-card { padding: 20px; }

  .features-section,
  .about-section { padding: 48px 0; }

  .page-content { padding-top: calc(var(--nav-height) + 32px); }
  .page-header h1 { font-size: 1.75rem; }

  .content-card { padding: 20px; }
  .version-header { padding: 20px; }
  .version-body { padding: 0 20px 20px; }
  .version-footer { padding: 16px 20px; }

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

  .author-card {
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 24px;
  }
  .author-links { justify-content: center; }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  .footer-links { justify-content: center; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
}

/* --- Utility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* Fade-in animation */
@keyframes fadeUp {
  from { opacity: 0; filter: blur(8px); transform: translateY(16px); }
  to { opacity: 1; filter: blur(0); transform: translateY(0); }
}
.fade-in {
  animation: fadeUp 0.6s var(--ease-out) both;
}
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }

/* Notice / callout box */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  margin: 16px 0;
  font-size: 0.9375rem;
  line-height: 1.55;
}
.notice-info {
  background: rgba(0, 122, 255, 0.08);
  border: 1px solid rgba(0, 122, 255, 0.15);
  color: var(--color-text-secondary);
}
.notice-warning {
  background: rgba(255, 159, 10, 0.08);
  border: 1px solid rgba(255, 159, 10, 0.15);
  color: var(--color-text-secondary);
}
.notice-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  line-height: 1;
  margin-top: 1px;
}

/* Divider */
.divider {
  height: 1px;
  background: var(--color-border);
  margin: 32px 0;
  border: none;
}

/* Section links list */
.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.link-list li {
  margin-bottom: 0;
}
.link-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  transition: background var(--transition-fast);
}
.link-list a:hover {
  background: var(--color-surface-hover);
}
.link-list a::after {
  content: '\2192';
  color: var(--color-text-tertiary);
  transition: transform var(--transition-fast);
}
.link-list a:hover::after {
  transform: translateX(4px);
  color: var(--color-primary);
}