/* ActivityLog-Signup -- nutzt die tatsaechliche Markenpalette der App
   (siehe ActivityLog/static/css/style.css): dunkler, technischer Look,
   Mono-Schrift fuers Fliessende, Syne fuer Display-Ueberschriften, scharfer
   Limette-Akzent statt generischem SaaS-Blau. */
:root {
  --bg: #0d0f12;
  --surface: #161a1f;
  --border: #252b33;
  --border-bright: #3a4452;
  --text: #c8d0da;
  --text-dim: #5a6578;
  --text-bright: #eef2f7;
  --accent: #e8ff5a;
  --accent-ink: #0d0f12;
  --error: #ff4d4d;
  --success: #7ee787;
  --mono: 'JetBrains Mono', monospace;
  --sans: 'Syne', sans-serif;
  --radius: 4px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  line-height: 1.6;
}

.section-inner { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ── Nav ─────────────────────────────────────────────────────────────── */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1080px; margin: 0 auto; padding: 16px 24px;
  display: flex; align-items: center; justify-content: space-between;
}
.logo-group { display: flex; align-items: center; gap: 14px; }
.back-link { color: var(--text-dim); font-size: 12px; text-decoration: none; }
.back-link:hover { color: var(--accent); }
.logo { font-family: var(--sans); font-weight: 800; font-size: 1.15rem; color: var(--text-bright); letter-spacing: -0.01em; }
.nav-actions { display: flex; align-items: center; gap: 18px; }
.nav-login-link { color: var(--text-dim); font-size: 0.85rem; text-decoration: none; }
.nav-login-link:hover { color: var(--accent); }

/* ── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-block;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 0.85rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  background: transparent;
  color: var(--text);
  transition: border-color 0.15s, transform 0.1s;
}
.btn:active { transform: scale(0.98); }
.btn-accent { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: color-mix(in srgb, var(--accent) 85%, white); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-nav { padding: 8px 16px; }
.btn-lg { padding: 13px 24px; font-size: 0.95rem; }
.btn-block { display: block; width: 100%; }
button:disabled { opacity: 0.55; cursor: not-allowed; }

/* ── Hero ────────────────────────────────────────────────────────────── */
.hero { padding: 72px 24px 96px; }
.hero-inner {
  max-width: 1080px; margin: 0 auto;
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center;
}
.eyebrow {
  display: inline-block; font-size: 0.78rem; font-weight: 700; letter-spacing: 0.04em;
  color: var(--accent); margin-bottom: 16px; text-transform: uppercase;
}
.hero-text h1 {
  font-family: var(--sans); font-weight: 800; font-size: 2.5rem; line-height: 1.12;
  margin: 0 0 20px; color: var(--text-bright); letter-spacing: -0.01em;
}
.lead { color: var(--text-dim); font-size: 1rem; margin: 0 0 28px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-note { color: var(--text-dim); font-size: 0.8rem; margin: 16px 0 0; }

/* ── Hero mockup (spiegelt die echte Feed-UI, siehe ActivityLog/static/app.js) */
.mock-window {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
  overflow: hidden; box-shadow: 0 24px 70px -24px rgba(0,0,0,0.7);
}
.mock-titlebar { display: flex; gap: 6px; padding: 10px 12px; border-bottom: 1px solid var(--border); }
.mock-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-bright); }
.mock-body { display: grid; grid-template-columns: 104px 1fr; min-height: 260px; }
.mock-sidebar { border-right: 1px solid var(--border); padding: 10px; font-size: 0.72rem; }
.mock-group {
  display: flex; align-items: center; gap: 6px; padding: 7px 8px; border-radius: 3px;
  color: var(--text-dim); margin-bottom: 4px;
}
.mock-group-active { background: var(--bg); color: var(--text-bright); }
.mock-swatch { width: 7px; height: 7px; border-radius: 50%; flex: none; }
.mock-feed { padding: 14px; display: flex; flex-direction: column; gap: 12px; }
.mock-entry { display: flex; gap: 10px; align-items: flex-start; }
.mock-avatar {
  flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--bg);
  border: 1px solid var(--border); color: var(--text-dim); font-size: 0.62rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.mock-avatar-ai { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.mock-bubble {
  background: var(--bg); border: 1px solid var(--border); border-radius: 4px; padding: 8px 10px;
  font-size: 0.78rem; color: var(--text); max-width: 280px;
}
.mock-bubble-ai { background: color-mix(in srgb, var(--accent) 10%, var(--bg)); border-color: color-mix(in srgb, var(--accent) 40%, var(--border)); }
.mock-meta { font-size: 0.66rem; color: var(--text-dim); margin-bottom: 3px; }

/* ── Sections ────────────────────────────────────────────────────────── */
.section-title {
  font-family: var(--sans); font-weight: 800; font-size: 1.6rem; text-align: center;
  color: var(--text-bright); margin: 0 0 44px; letter-spacing: -0.01em;
}
.features { padding: 24px 0 88px; }
.feature-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.feature-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 26px;
}
.feature-icon {
  width: 38px; height: 38px; border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 19px; height: 19px; }
.feature-card h3 { font-family: var(--sans); font-weight: 700; margin: 0 0 8px; font-size: 1.02rem; color: var(--text-bright); }
.feature-card p { margin: 0; color: var(--text-dim); font-size: 0.88rem; }

.steps { padding: 24px 0 96px; background: var(--surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.step-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step { text-align: center; }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-family: var(--sans); font-weight: 800; margin-bottom: 14px;
}
.step h3 { font-family: var(--sans); font-weight: 700; margin: 0 0 8px; font-size: 0.98rem; color: var(--text-bright); }
.step p { margin: 0; color: var(--text-dim); font-size: 0.86rem; }

/* ── Signup ──────────────────────────────────────────────────────────── */
.signup-section { padding: 96px 24px; display: flex; justify-content: center; }
.signup-card {
  width: 100%; max-width: 420px;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 32px;
}
.signup-card h2 { font-family: var(--sans); font-weight: 800; margin: 0 0 8px; font-size: 1.35rem; color: var(--text-bright); }
.signup-card h3 { font-family: var(--sans); font-weight: 700; margin: 0 0 8px; font-size: 1.1rem; color: var(--success); }
.sub { color: var(--text-dim); margin: 0 0 24px; line-height: 1.5; font-size: 0.88rem; }

label { display: block; font-size: 0.78rem; color: var(--text-dim); margin: 16px 0 6px; }
input[type="text"], input[type="email"] {
  width: 100%; padding: 10px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--bg); color: var(--text-bright);
  font-family: var(--mono); font-size: 0.92rem;
}
input:focus { outline: none; border-color: var(--accent); }

.hp { position: absolute; left: -9999px; top: -9999px; }

.error { color: var(--error); font-size: 0.85rem; margin-top: 12px; }
.success p { color: var(--text-dim); line-height: 1.5; font-size: 0.88rem; }
.redirect-note { text-align: center; color: var(--text-dim); font-size: 0.8rem; margin: 12px 0 0; }

/* ── Footer ──────────────────────────────────────────────────────────── */
.footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner { display: flex; justify-content: space-between; color: var(--text-dim); font-size: 0.82rem; }
.footer-inner span:first-child { font-family: var(--sans); color: var(--text); font-weight: 700; }
.footer-inner a { color: var(--text-dim); text-decoration: none; }
.footer-inner a:hover { color: var(--accent); }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-mock { order: -1; }
  .feature-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; gap: 28px; }
  .hero-text h1 { font-size: 2rem; }
}