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

:root {
  --bg:      #0a0a0a;
  --surface: #111111;
  --border:  #1a1a1a;
  --accent:  #c8f135;
  --text:    #ffffff;
  --muted:   #999999;
  --font:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { font-size: 16px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ─── Site Header ─────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-header img.app-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  flex-shrink: 0;
}

.header-title { flex: 1; }

.header-title h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text);
  line-height: 1.1;
}

.header-title .tagline {
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 0.1rem;
}

.nav-link {
  font-size: 0.875rem;
  color: var(--muted);
  white-space: nowrap;
  transition: color 0.15s;
}
.nav-link:hover { color: var(--accent); text-decoration: none; }

/* ─── Main Content ────────────────────────────────── */
main {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
  flex: 1;
}

/* ─── About ───────────────────────────────────────── */
.about p {
  font-size: 1.125rem;
  line-height: 1.75;
  color: #cccccc;
  max-width: 680px;
}

/* ─── Section Titles ──────────────────────────────── */
.section-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

section { margin-top: 3rem; }

/* ─── Mode Cards Grid ─────────────────────────────── */
.modes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.mode-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
}

.mode-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.4rem;
}

.mode-card p {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.5;
}

/* ─── Highlight Blocks (Daily / Group) ────────────── */
.highlight-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 8px;
  padding: 1.75rem 2rem;
  margin-bottom: 1rem;
}

.highlight-block h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.6rem;
}

.highlight-block p {
  font-size: 0.95rem;
  color: #bbbbbb;
  line-height: 1.65;
  max-width: 640px;
}

/* ─── Footer ──────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.site-footer img.studio-logo {
  height: 28px;
  opacity: 0.6;
  filter: invert(1);
}

.site-footer p {
  font-size: 0.8rem;
  color: var(--muted);
}

.site-footer a {
  color: var(--muted);
}
.site-footer a:hover { color: var(--accent); }

/* ─── Privacy Policy ──────────────────────────────── */
.policy-content {
  max-width: 700px;
}

.policy-meta {
  font-size: 0.85rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
}

.policy-content h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
}

.policy-content p {
  font-size: 0.95rem;
  color: #cccccc;
  line-height: 1.75;
  margin-bottom: 0.75rem;
}

.policy-content ul {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}

.policy-content ul li {
  font-size: 0.95rem;
  color: #cccccc;
  line-height: 1.65;
  margin-bottom: 0.35rem;
}

.policy-content strong { color: var(--text); }

/* ─── Responsive ──────────────────────────────────── */
@media (max-width: 640px) {
  .site-header { padding: 1rem 1.25rem; gap: 0.75rem; }
  .site-header img.app-icon { width: 44px; height: 44px; }
  .header-title h1 { font-size: 1.4rem; }

  main { padding: 2rem 1.25rem; }

  .modes-grid { grid-template-columns: 1fr; }

  .highlight-block { padding: 1.25rem 1.25rem; }

  .site-footer { padding: 1.5rem 1.25rem; }
}