/* ===================================================
   Shared styles — davidrowthorn.tech
   Premium dark theme
   =================================================== */

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

:root {
  /* Backgrounds */
  --bg-primary:    #0c0c14;
  --bg-surface:    #13131f;
  --bg-card:       #1a1a2a;
  --bg-card-hover: #1f1f32;
  --bg-border:     rgba(255, 255, 255, .06);

  /* Accent */
  --accent-blue:   #3b82f6;
  --accent-amber:  #f59e0b;
  --accent-orange: #f97316;
  --accent-green:  #10b981;
  --accent-purple: #8b5cf6;

  /* Glow */
  --glow-blue:   rgba(59, 130, 246, .15);
  --glow-amber:  rgba(245, 158, 11, .12);

  /* Text */
  --text-primary:   #f0f0f5;
  --text-secondary: #c8c8d8;
  --text-tertiary:  #a0a0b8;
  --text-muted:     #6e6e8a;
  --text-disabled:  #4a4a60;

  /* Links */
  --link:       #60a5fa;
  --link-hover: #93bbfd;

  /* Section headings */
  --heading-accent: #e5c07b;

  /* Misc */
  --border-color:  rgba(255, 255, 255, .06);
  --radius-sm:  10px;
  --radius-md:  16px;
  --radius-lg:  28px;
  --max-width:  760px;

  /* Font */
  --font-stack: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
                Helvetica, Arial, sans-serif;

  /* Spacing scale */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-stack);
  background: var(--bg-primary);
  color: var(--text-tertiary);
  line-height: 1.7;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle radial glow behind main content */
body::before {
  content: '';
  position: fixed;
  top: -40%;
  left: 50%;
  translate: -50% 0;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, .06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* --- Typography --- */
h1, h2, h3, h4 { color: var(--text-primary); font-weight: 700; letter-spacing: -.02em; }
h1 { font-size: 2rem;   margin-bottom: .5rem; }
h2 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--heading-accent);
  margin-top: 2.5rem;
  margin-bottom: .75rem;
}
h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--heading-accent);
  margin-top: 1.5rem;
  margin-bottom: .5rem;
}
p  { margin-bottom: 1rem; }
strong { color: var(--text-secondary); }
code {
  background: var(--bg-card);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: .88em;
  border: 1px solid var(--border-color);
}

a       { color: var(--link); text-decoration: none; transition: color .2s; }
a:hover { color: var(--link-hover); text-decoration: underline; }

ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li     { margin-bottom: .5rem; }

/* --- Layout --- */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-lg);
}

/* --- Hero section (homepage) --- */
.hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: .75rem;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 50%, var(--accent-blue) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero .subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin: 0 auto var(--space-lg);
  max-width: 480px;
  line-height: 1.6;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Section headings on homepage --- */
.section-label {
  font-size: .8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

/* --- App cards (homepage) --- */
.app-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-md);
}
.app-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color .25s, box-shadow .25s;
  display: flex;
  flex-direction: column;
}
.app-card:hover {
  border-color: rgba(255, 255, 255, .1);
  box-shadow:
    0 8px 30px rgba(0, 0, 0, .3),
    0 0 0 1px rgba(255, 255, 255, .05);
}
.app-card-img {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 200px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
  padding: var(--space-lg);
}
.app-card-img img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .4);
}

/* Phone screenshots side by side */
.app-card-img--phones {
  gap: var(--space-sm);
}
.app-card-img--phones img {
  max-width: none;
  height: 100%;
  flex-shrink: 0;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .4);
}
.app-card-body {
  padding: var(--space-lg);
  flex: 1;
  display: flex;
  flex-direction: column;
}
.app-card-body h3 {
  color: var(--text-primary);
  margin: 0 0 var(--space-sm);
  font-size: 1.15rem;
  letter-spacing: -.01em;
}
.app-card-body p {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0;
  line-height: 1.6;
  flex: 1;
}

/* Card title link */
.app-card-title {
  text-decoration: none;
  color: inherit;
}
.app-card-title:hover {
  text-decoration: none;
  color: inherit;
}
.app-card-title:hover h3 {
  color: var(--link);
}

/* Store badge row at bottom of card */
.app-card-stores {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border-color);
  flex-wrap: wrap;
}
.app-card-stores .store-badge {
  height: 36px;
}
.app-card-stores .store-badge img {
  height: 36px;
  width: auto;
  object-fit: contain;
}
.store-badge--disabled {
  opacity: .35;
  pointer-events: none;
}

/* --- Badges / Pills --- */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-top: var(--space-md);
}
.badge-blue   { background: rgba(59,130,246,.12); color: var(--accent-blue); }
.badge-amber  { background: rgba(245,158,11,.12); color: var(--accent-amber); }
.badge-green  { background: rgba(16,185,129,.12); color: var(--accent-green); }
.badge-orange { background: rgba(249,115,22,.12); color: var(--accent-orange); }

/* --- Header (shared app header for sub-pages) --- */
.app-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}
.app-header img {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  box-shadow: 0 2px 12px rgba(0, 0, 0, .3);
}
.app-header .app-name {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.02em;
}
.app-header .app-tagline {
  font-size: .88rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: 2px;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
}
.tab-btn {
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-stack);
  font-size: .9rem;
  font-weight: 500;
  padding: 12px 20px;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: color .2s, border-color .2s;
  margin-bottom: -1px;
}
.tab-btn:hover {
  color: var(--text-secondary);
  text-decoration: none;
}
.tab-btn.active {
  color: var(--accent-amber);
  border-bottom-color: var(--accent-amber);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-stack);
  font-size: .9rem;
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: background .2s, transform .1s, box-shadow .2s;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--accent-blue);
  color: #fff;
  box-shadow: 0 2px 12px rgba(59, 130, 246, .25);
}
.btn-primary:hover {
  background: #2563eb;
  color: #fff;
  box-shadow: 0 4px 20px rgba(59, 130, 246, .35);
}

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(255, 255, 255, .1);
}
.btn-outline:hover {
  background: var(--bg-card);
  color: var(--text-primary);
  border-color: rgba(255, 255, 255, .15);
}

/* --- Footer --- */
.site-footer {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-color);
  font-size: .8rem;
  color: var(--text-disabled);
  text-align: center;
}

/* --- Effective date label --- */
.effective-date {
  font-size: .85rem;
  color: var(--text-disabled);
  margin-bottom: 2rem;
}

/* --- Support line (obfuscated email) --- */
.support-line {
  font-size: .9rem;
  color: var(--text-muted);
  margin-top: var(--space-xl);
  margin-bottom: 1.5rem;
}
.support-line a { color: var(--link); }

/* --- Back link --- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
  transition: color .2s, gap .2s;
}
.back-link:hover {
  color: var(--link);
  text-decoration: none;
  gap: 10px;
}

/* --- Licence note --- */
.licence-note {
  font-size: .88rem;
  color: var(--text-muted);
  margin-top: var(--space-md);
}

/* --- Store badges --- */
.store-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
  margin-top: var(--space-md);
}
.store-badge {
  display: inline-block;
  height: 36px;
  transition: opacity .2s, transform .15s;
}
.store-badge:hover { opacity: .85; transform: translateY(-1px); }
.store-badge:active { transform: scale(.97); }
.store-badge img {
  height: 36px;
  width: auto;
}

/* --- Screenshot rows (sub-pages) --- */
.screenshot-row {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg) 0;
  justify-content: center;
}

/* Phone screenshots on sub-pages */
.screenshot-row--phones img {
  height: 320px;
  max-width: 70vw;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .4);
  flex-shrink: 0;
}

/* Wide screenshots (e.g. desktop app) — shrink to fit */
.screenshot-row--wide img {
  height: auto;
  max-height: 280px;
  max-width: 70vw;
  flex-shrink: 1;
  min-width: 0;
  width: auto;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(0, 0, 0, .4);
}

/* --- Hide screenshots by breakpoint --- */

/* Sub-page phone screenshots: show max 3, then 2, then 1 */
.screenshot-row--phones img:nth-child(n+4) { display: none; }
@media (max-width: 700px) {
  .screenshot-row--phones img:nth-child(n+3) { display: none; }
}
@media (max-width: 480px) {
  .screenshot-row--phones img:nth-child(n+2) { display: none; }
}

/* Homepage card phone screenshots */
@media (max-width: 420px) {
  .app-card-img--phones img:nth-child(n+3) { display: none; }
}

/* --- Divider --- */
.section-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: var(--space-xl) 0;
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .container { padding: var(--space-xl) var(--space-md); }
  h1 { font-size: 1.6rem; }
  .hero { padding: var(--space-xl) 0 var(--space-lg); }
  .hero h1 { font-size: 2rem; }
  .app-cards { grid-template-columns: 1fr; }
  .tab-btn { padding: 10px 14px; font-size: .85rem; }
}