/* Echo Mind – Modern design system */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

:root {
  --bg-deep: #0a0e17;
  --bg-card: #131a2b;
  --bg-elevated: #1a2332;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #06b6d4;
  --accent-hover: #22d3ee;
  --accent-soft: rgba(6, 182, 212, 0.15);
  --success: #10b981;
  --border: rgba(148, 163, 184, 0.12);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  --transition: 0.2s ease;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Optional: load DM Sans for a modern look */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 32px 24px 48px;
}

/* Header */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0 32px;
  border-bottom: 1px solid var(--border);
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

nav {
  display: flex;
  gap: 28px;
}

nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

nav a:hover {
  color: var(--accent);
}

/* Hero */
.hero {
  text-align: center;
  padding: 72px 0 80px;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 20px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto 32px;
  line-height: 1.65;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  background: var(--accent);
  color: var(--bg-deep) !important;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: background var(--transition), transform 0.15s ease;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.35);
}

.button:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

/* Features grid */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-top: 48px;
}

.feature {
  background: var(--bg-card);
  padding: 28px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.feature:hover {
  border-color: rgba(6, 182, 212, 0.25);
  box-shadow: var(--shadow);
}

.feature h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
  font-weight: 600;
}

.feature p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* Page title (inner pages) */
.page-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 32px 0 28px;
}

/* Content blocks */
.content {
  max-width: 720px;
}

.content p {
  line-height: 1.7;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

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

.content h2 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 2rem 0 0.75rem;
}

.content h2:first-child {
  margin-top: 0;
}

.content ul, .content ol {
  margin: 0 0 1.25rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.content li {
  margin-bottom: 0.5rem;
}

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

/* Subscription / info box */
.subscription-box,
.info-box {
  background: var(--accent-soft);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin: 28px 0;
}

.subscription-box h3,
.info-box h3 {
  margin: 0 0 12px;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.subscription-box p,
.info-box p {
  margin: 0 0 8px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.subscription-box p:last-child,
.info-box p:last-child {
  margin-bottom: 0;
}

/* FAQ / support list */
.faq-list, .support-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.faq-list li, .support-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
}

.faq-list li:last-child, .support-list li:last-child {
  border-bottom: none;
}

.faq-list strong, .support-list strong {
  display: block;
  color: var(--text-primary);
  margin-bottom: 4px;
}

/* Footer */
footer {
  text-align: center;
  padding: 48px 0 24px;
  margin-top: 48px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

footer p {
  margin: 0;
}

footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

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

/* Link in content */
.content a {
  color: var(--accent);
  text-decoration: none;
}

.content a:hover {
  text-decoration: underline;
}