/* Art direction: independent cafe prototype → warm, calm, credible
   Palette: neutral beige surfaces with restrained teal accent
   Typography: Instrument Serif + Inter
   Density: balanced */

:root,
[data-theme="light"] {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --color-bg: #f7f6f2;
  --color-surface: #f9f8f5;
  --color-surface-2: #fbfbf9;
  --color-surface-offset: #f3f0ec;
  --color-border: #d4d1ca;
  --color-divider: #dcd9d5;
  --color-text: #28251d;
  --color-text-muted: #69675f;
  --color-text-faint: #a3a09a;
  --color-text-inverse: #f9f8f4;
  --color-primary: #01696f;
  --color-primary-hover: #0c4e54;
  --color-primary-highlight: #cedcd8;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.875rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 2px rgba(27, 25, 20, 0.06);
  --shadow-md: 0 8px 24px rgba(27, 25, 20, 0.08);

  --content-default: 1120px;
  --font-display: "Instrument Serif", Georgia, serif;
  --font-body: "Inter", Arial, sans-serif;
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  --color-bg: #171614;
  --color-surface: #1c1b19;
  --color-surface-2: #201f1d;
  --color-surface-offset: #22211f;
  --color-border: #393836;
  --color-divider: #2a2927;
  --color-text: #e1dfda;
  --color-text-muted: #b5b1aa;
  --color-text-faint: #7d7972;
  --color-text-inverse: #1f1d1a;
  --color-primary: #4f98a3;
  --color-primary-hover: #65aab3;
  --color-primary-highlight: #29383a;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.28);
}

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

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

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

button,
input {
  font: inherit;
}

img,
svg {
  display: block;
  max-width: 100%;
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: var(--space-4);
}

.skip-link:focus {
  left: var(--space-4);
  z-index: 20;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.container {
  width: min(100% - 2rem, var(--content-default));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--color-bg) 84%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
}

.brand-text {
  font-size: var(--text-lg);
  letter-spacing: -0.02em;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle,
.nav-link,
.button {
  min-height: 44px;
  border-radius: var(--radius-full);
}

.theme-toggle {
  min-width: 44px;
  border: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
  background: var(--color-surface);
  color: var(--color-text);
}

.nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0 var(--space-4);
  border: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
}

.hero {
  padding: clamp(var(--space-10), 8vw, var(--space-20)) 0;
}

.hero-grid {
  display: grid;
  gap: var(--space-10);
  align-items: center;
}

.hero-copy h1,
.section h2,
.cta-card h2 {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  font-size: var(--text-2xl);
  max-width: 12ch;
  margin: 0 0 var(--space-5);
}

.hero-text {
  max-width: 58ch;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-6);
}

.eyebrow,
.small-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
}

.eyebrow {
  margin-bottom: var(--space-4);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.button {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  padding: 0.85rem 1.2rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    color var(--transition-interactive);
}

.button:hover,
.theme-toggle:hover,
.nav-link:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.button-primary:hover {
  background: var(--color-primary-hover);
}

.button-secondary {
  background: var(--color-surface);
  border-color: color-mix(in srgb, var(--color-text) 12%, transparent);
}

.button-full {
  width: 100%;
}

.hero-points {
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--color-text-muted);
  display: grid;
  gap: var(--space-2);
}

.phone-shell {
  margin-inline: auto;
  width: min(100%, 360px);
  padding: 14px;
  border-radius: 34px;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--color-surface) 75%, white), var(--color-surface-offset));
  border: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
  box-shadow: var(--shadow-md);
}

.phone-screen {
  border-radius: 24px;
  background: var(--color-surface-2);
  padding: var(--space-5);
  display: grid;
  gap: var(--space-5);
}

.app-top h2 {
  margin-top: var(--space-1);
  font-size: var(--text-xl);
}

.loyalty-card,
.info-card,
.cta-card,
.mini-list {
  border: 1px solid color-mix(in srgb, var(--color-text) 10%, transparent);
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.loyalty-card {
  padding: var(--space-5);
}

.card-top,
.mini-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.card-top {
  align-items: flex-start;
  margin-bottom: var(--space-4);
}

.card-top h3,
.section h2,
.steps h3,
.cta-card h2,
.info-card h2 {
  margin: 0;
}

.card-copy,
.info-card p,
.steps p,
.cta-card p {
  color: var(--color-text-muted);
}

.status-pill {
  white-space: nowrap;
  padding: 0.4rem 0.7rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  font-size: var(--text-xs);
  font-weight: 600;
}

.stamps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-2);
  margin: var(--space-5) 0;
}

.stamp {
  aspect-ratio: 1;
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  border: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent);
}

.stamp.filled {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.mini-list {
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.mini-row span {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.section {
  padding: clamp(var(--space-8), 6vw, var(--space-16)) 0;
}

.grid-three {
  display: grid;
  gap: var(--space-4);
}

.info-card {
  padding: var(--space-5);
}

.info-card h2 {
  font-size: var(--text-lg);
  font-family: var(--font-body);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin: var(--space-2) 0 var(--space-3);
}

.section-contrast {
  background: var(--color-surface);
  border-block: 1px solid var(--color-divider);
}

.split {
  display: grid;
  gap: var(--space-8);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: var(--space-5);
}

.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-4);
  align-items: start;
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}

.steps li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.step-number {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cta-card {
  padding: var(--space-6);
  display: grid;
  gap: var(--space-6);
}

.signup-form {
  display: grid;
  gap: var(--space-3);
}

.signup-form input {
  min-height: 48px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--color-text) 12%, transparent);
  background: var(--color-surface-2);
  color: var(--color-text);
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .grid-three {
    grid-template-columns: repeat(3, 1fr);
  }

  .split {
    grid-template-columns: 0.8fr 1.2fr;
  }

  .cta-card {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}