/* ──────────────────────────────────────────────────────────────────────────
   untangly Landing — Brand-Tokens & Layout
   Tokens spiegeln Flutter-App-Theme (lib/core/theme/app_theme.dart)
   ────────────────────────────────────────────────────────────────────────── */

:root {
  /* Brand colors — Light */
  --color-primary: #7FA050;          /* Leaf-Grün */
  --color-primary-hover: #6B8A42;
  --color-on-primary: #FFFFFF;
  --color-primary-container: #D5E4B5;

  --color-secondary: #5C3B1F;        /* Wordmark-Braun */
  --color-tertiary: #D77A3A;         /* Logo-Orange */

  --color-bg: #FFF9EF;               /* Scaffold-Background (warm-weiß) */
  --color-surface: #FFFDF7;
  --color-surface-alt: #F2EBD8;      /* Cream-Paper, Akzent-Fill */
  --color-on-surface: #2E2A20;
  --color-on-surface-muted: #5C5648;
  --color-outline: #B8AE94;
  --color-outline-variant: #E2D9C2;

  /* Typography */
  --font-display: 'Comfortaa', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;

  /* Spacing scale (rem) */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-24: 6rem;

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;

  /* Layout */
  --container-max: 1080px;
  --header-height: 64px;
}

/* ── Reset / Base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-on-surface);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-4);
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.25rem, 5vw + 1rem, 3.75rem); }
h2 { font-size: clamp(1.625rem, 2.5vw + 1rem, 2.25rem); margin-bottom: var(--space-8); }
h3 { font-size: 1.125rem; margin-bottom: var(--space-2); }

p { margin: 0 0 var(--space-4); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 120ms ease;
}
a:hover { color: var(--color-primary-hover); }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.lead {
  font-size: 1.125rem;
  color: var(--color-on-surface-muted);
  max-width: 36rem;
}

.muted { color: var(--color-on-surface-muted); }

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: background-color 140ms ease, color 140ms ease, transform 80ms ease;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }

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

.btn-ghost {
  background: transparent;
  color: var(--color-on-surface);
  padding: 8px 14px;
}
.btn-ghost:hover { background: var(--color-surface-alt); color: var(--color-on-surface); }

/* ── Header ──────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(255, 249, 239, 0.92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--color-outline-variant);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}
.brand {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-secondary);
  letter-spacing: -0.02em;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}
.site-nav a { color: var(--color-on-surface); font-weight: 500; }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  padding: var(--space-24) 0 var(--space-16);
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(127, 160, 80, 0.10), transparent 60%),
    radial-gradient(900px 400px at -10% 10%, rgba(215, 122, 58, 0.08), transparent 60%);
}
.hero h1 { max-width: 18ch; }
.hero .lead { margin-bottom: var(--space-8); }
.hero-cta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.hero-meta {
  font-size: 0.9rem;
  color: var(--color-on-surface-muted);
}

/* ── Features ────────────────────────────────────────────────────────────── */
.features {
  padding: var(--space-16) 0;
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-6);
}
.feature {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

/* ── Waitlist ────────────────────────────────────────────────────────────── */
.waitlist {
  padding: var(--space-16) 0 var(--space-24);
  background: var(--color-surface-alt);
}
.waitlist h2 { margin-bottom: var(--space-3); }
.waitlist .lead { margin-bottom: var(--space-8); }

.brevo-placeholder {
  background: var(--color-surface);
  border: 1px dashed var(--color-outline);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  max-width: 32rem;
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--color-outline-variant);
  padding: var(--space-8) 0;
  background: var(--color-bg);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer-brand {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--color-secondary);
  margin: 0;
}
.footer-nav {
  display: flex;
  gap: var(--space-6);
}
.footer-nav a { color: var(--color-on-surface-muted); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--color-on-surface); }

/* ── Legal pages ─────────────────────────────────────────────────────────── */
.legal {
  padding: var(--space-12) 0 var(--space-16);
  max-width: 720px;
}
.legal h1 { font-size: clamp(1.75rem, 3vw + 1rem, 2.5rem); margin-bottom: var(--space-6); }
.legal h2 { font-size: 1.25rem; margin-top: var(--space-8); margin-bottom: var(--space-3); }

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 540px) {
  .hero { padding: var(--space-16) 0 var(--space-12); }
  .site-nav a:not(.btn) { display: none; }
}