/* Speekeezy — Design system & global styles
   Fonts: Outfit (headings), DM Sans (body) — distinctive, not overused
   Palette: Warm, inviting — coral accent, deep text, soft backgrounds */

:root {
  /* Colors */
  --color-bg: #faf9f7;
  --color-bg-elevated: #ffffff;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-accent: #e85d4c;
  --color-accent-hover: #d44b3a;
  --color-accent-soft: rgba(232, 93, 76, 0.12);
  --color-border: #e8e6e3;
  --color-success: #2d8a6e;
  --color-surface: #f2f0ed;

  /* Typography */
  --font-heading: 'Outfit', system-ui, sans-serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Layout */
  --max-width: 72rem;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --duration-fast: 150ms;
  --duration-normal: 250ms;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw, 2.5rem); margin: 0 0 var(--space-lg); }
h3 { font-size: 1.25rem; margin: 0 0 var(--space-sm); }

p {
  margin: 0 0 var(--space-md);
  color: var(--color-text-muted);
}

p:last-child { margin-bottom: 0; }

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

a:hover { color: var(--color-accent-hover); }
a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

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

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 249, 247, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.site-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-text);
  letter-spacing: -0.03em;
}

.site-logo:hover { color: var(--color-text); }

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

.site-nav a {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-nav a:hover { color: var(--color-text); }

/* Primary button: matches Swift PrimaryButton (bubble-user-top → bubble-user-bottom) */
.cta-button,
a.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  color: #fff !important;
  background: linear-gradient(180deg, #218BFF 0%, #306BFF 100%);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              filter var(--duration-fast);
}

.cta-button:hover,
a.cta-button:hover {
  color: #fff !important;
  filter: brightness(0.92);
  transform: translateY(-1px);
  box-shadow: 0 8px 24px rgba(33, 139, 255, 0.35);
}

.cta-button:active,
.cta-button:focus,
a.cta-button:active,
a.cta-button:focus {
  color: #fff !important;
}
.cta-button:active,
a.cta-button:active { transform: translateY(0); }
.cta-button:disabled,
a.cta-button:disabled { opacity: 0.6; cursor: not-allowed; transform: none; color: #fff !important; }
.cta-button:focus-visible,
a.cta-button:focus-visible { outline: 2px solid var(--color-text); outline-offset: 2px; }

.cta-button-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 2px solid var(--color-accent);
}

.cta-button-secondary:hover {
  background: var(--color-accent-soft);
  box-shadow: none;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-sm);
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: var(--duration-normal) var(--ease-out);
}

/* Grid utilities for responsive sections */
.grid-solution { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-3xl); align-items: center; max-width: 56rem; margin: 0 auto; }
.grid-features { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-lg); max-width: 52rem; margin: 0 auto; }
.grid-features .card-span-2 { grid-column: span 2; }
@media (max-width: 768px) {
  .grid-solution { grid-template-columns: 1fr; }
  .grid-features { grid-template-columns: 1fr; }
  .grid-features .card-span-2 { grid-column: span 1; }
  .nav-toggle { display: flex; }
  .site-nav {
    position: fixed;
    top: 4rem;
    left: 0;
    right: 0;
    flex-direction: column;
    padding: var(--space-xl);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--duration-normal) var(--ease-out),
                opacity var(--duration-normal),
                visibility var(--duration-normal);
  }
  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

/* Sections */
.section {
  padding: var(--space-4xl) 0;
}

.section-alt { background: var(--color-surface); }

.section-header {
  text-align: center;
  max-width: 40rem;
  margin: 0 auto var(--space-3xl);
}

.section-header h2 { margin-bottom: var(--space-md); }
.section-header p { font-size: 1.125rem; }

/* Cards / Bento */
.card {
  background: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  transition: border-color var(--duration-normal), box-shadow var(--duration-normal);
}

.card:hover {
  border-color: var(--color-accent-soft);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.06);
}

/* Footer */
.site-footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
  margin-top: var(--space-4xl);
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.footer-links {
  display: block;
}

.footer-links a {
  display: inline-block;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  margin-right: var(--space-xl);
  margin-bottom: var(--space-sm);
}

.footer-links a:hover { color: var(--color-text); }

.copyright {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

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