:root {
  --bg: #0b0f14;
  --surface: #131a24;
  --border: #1f2a3a;
  --text: #e8eef7;
  --muted: #8fa3bf;
  --accent: #25d366;
  --accent-dark: #1da851;
  --danger: #ff6b6b;
  --radius: 12px;
  --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text);
}

.logo span { color: var(--accent); }

.nav-links { display: flex; gap: 16px; align-items: center; }

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

.nav-links a.nav-active {
  color: var(--accent);
  font-weight: 600;
  border-bottom-color: var(--accent);
}

.nav-links a.btn {
  border-bottom: none;
  padding: 10px 20px;
}

.nav-links a.btn-primary {
  color: #000;
}

.nav-links a.btn-primary:hover {
  color: #000;
  background: var(--accent-dark);
}

.nav-links a.btn-primary.nav-active {
  color: #000;
  background: var(--accent-dark);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.35);
}

.nav-links a.btn.nav-active:not(.btn-primary) {
  border-bottom: none;
  box-shadow: 0 0 0 2px var(--text);
}

.btn {
  display: inline-block;
  padding: 10px 20px;
  border-radius: 8px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
  transition: 0.2s;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover {
  background: var(--accent-dark);
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-outline:hover { border-color: var(--accent); text-decoration: none; }

.hero {
  text-align: center;
  padding: 80px 0 60px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin-bottom: 20px;
}

.hero p {
  color: var(--muted);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  padding: 40px 0 80px;
}

.feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.feature h3 { margin-bottom: 8px; color: var(--accent); }
.feature p { color: var(--muted); font-size: 0.95rem; }

.code-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin: 40px auto 80px;
  max-width: 700px;
  overflow-x: auto;
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: left;
}

/* Forms */
.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
  width: 100%;
  max-width: 420px;
}

.auth-card h1 { margin-bottom: 8px; font-size: 1.6rem; }
.auth-card p { color: var(--muted); margin-bottom: 24px; }

.form-group { margin-bottom: 16px; }

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.alert {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

.alert-error { background: #3d1515; color: var(--danger); border: 1px solid var(--danger); }
.alert-success { background: #153d20; color: var(--accent); border: 1px solid var(--accent); }
.alert-warning { background: #3d3515; color: #ffd166; border: 1px solid #ffd166; }

/* Dashboard */
.dashboard { padding: 32px 0 60px; }

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  flex-wrap: wrap;
  gap: 16px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
}

.account-profile {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 20px;
}

.account-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #153d20;
  color: var(--accent);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(37, 211, 102, 0.35);
}

.account-info h1 {
  font-size: 1.35rem;
  margin-bottom: 4px;
  color: var(--text);
}

.account-info #account-email {
  color: var(--muted);
  font-size: 0.95rem;
}

.account-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 6px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.card h2 {
  font-size: 1.1rem;
  margin-bottom: 16px;
  color: var(--accent);
}

.status-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.status-connected { background: #153d20; color: var(--accent); }
.status-disconnected { background: #3d1515; color: var(--danger); }
.status-qr { background: #3d3515; color: #ffd166; }
.status-connecting,
.status-reconnecting { background: #1a2a3d; color: #8fa3bf; }

.wa-details {
  margin: 0;
  display: grid;
  gap: 10px;
}

.wa-detail-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  font-size: 0.9rem;
}

.wa-detail-row dt {
  color: var(--muted);
  font-weight: 500;
}

.wa-detail-row dd {
  color: var(--text);
  text-align: right;
  font-family: monospace;
  font-size: 0.85rem;
}

.wa-detail-row dd.wa-detail-status {
  font-family: inherit;
  font-size: inherit;
}

#qr-image {
  display: block;
  margin: 16px auto;
  max-width: 220px;
  border-radius: 8px;
}

.qr-loading {
  text-align: center;
  padding: 24px 0 8px;
}

.qr-loading p {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 12px;
}

.spinner {
  width: 40px;
  height: 40px;
  margin: 0 auto;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.api-key-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  font-family: monospace;
  font-size: 0.85rem;
  word-break: break-all;
  flex: 1;
}

.api-key-row {
  display: flex;
  align-items: stretch;
  gap: 8px;
  margin: 12px 0;
}

.copy-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  width: 44px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: 0.2s;
  flex-shrink: 0;
}

.copy-btn svg {
  display: block;
}

.copy-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.copy-btn.copied {
  border-color: var(--accent);
  color: var(--accent);
}

.example {
  background: var(--bg);
  border-radius: 8px;
  padding: 12px;
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--muted);
  overflow-x: auto;
  margin-top: 12px;
}

footer {
  text-align: center;
  padding: 24px;
  color: var(--muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 600px) {
  .hero { padding: 48px 0 32px; }
  .auth-card { padding: 24px; }
}

/* Documentation */
.docs-page { padding: 32px 0 60px; }

.docs-page h1 {
  font-size: 2rem;
  margin-bottom: 8px;
}

.docs-intro {
  color: var(--muted);
  font-size: 1.05rem;
  margin-bottom: 32px;
  max-width: 640px;
}

.docs-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}

.docs-nav a {
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
}

.docs-nav a:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

.doc-section {
  margin-bottom: 48px;
  scroll-margin-top: 24px;
}

.doc-section h2 {
  font-size: 1.35rem;
  color: var(--accent);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.doc-section h3 {
  font-size: 1rem;
  margin: 24px 0 8px;
}

.doc-section p,
.doc-section li {
  color: var(--muted);
  margin-bottom: 12px;
}

.doc-section ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.doc-section li { margin-bottom: 6px; }

.doc-code {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  font-family: monospace;
  font-size: 0.82rem;
  color: var(--text);
  overflow-x: auto;
  margin: 12px 0 20px;
  line-height: 1.6;
  position: relative;
}

.doc-code .label {
  display: block;
  color: var(--accent);
  font-size: 0.75rem;
  margin-bottom: 8px;
  font-family: var(--font);
  font-weight: 600;
}

.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.9rem;
}

.doc-table th,
.doc-table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}

.doc-table th {
  background: var(--surface);
  color: var(--accent);
  font-weight: 600;
}

.doc-table td { color: var(--muted); }

.doc-table code {
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--text);
}

.doc-tip {
  background: #153d20;
  border: 1px solid var(--accent);
  border-radius: 8px;
  padding: 14px 16px;
  color: var(--accent);
  font-size: 0.9rem;
  margin: 16px 0;
}

.doc-warn {
  background: #3d3515;
  border: 1px solid #ffd166;
  border-radius: 8px;
  padding: 14px 16px;
  color: #ffd166;
  font-size: 0.9rem;
  margin: 16px 0;
}

/* Test API */
.test-api-card {
  width: 100%;
}

.test-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
}

.test-tab {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  padding: 8px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.9rem;
  transition: 0.2s;
}

.test-tab:hover {
  border-color: var(--accent);
  color: var(--text);
}

.test-tab.active {
  background: #153d20;
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.test-api-card .form-group {
  margin-bottom: 16px;
}

.test-api-card .form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--muted);
}

.test-api-card .form-group input {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 1rem;
}

.test-api-card .form-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.test-api-card .form-group small {
  display: block;
  margin-top: 4px;
  font-size: 0.8rem;
}

#test-result:empty { display: none; }
#test-result .alert { margin-bottom: 16px; }