@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-primary: #0a0a12;
  --bg-secondary: #0f0f1a;
  --bg-card: #13131f;
  --bg-card-hover: #1a1a2e;
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.15);
  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b82;
  --purple: #8b5cf6;
  --purple-dim: rgba(139, 92, 246, 0.12);
  --cyan: #06b6d4;
  --cyan-dim: rgba(6, 182, 212, 0.12);
  --green: #10b981;
  --green-dim: rgba(16, 185, 129, 0.12);
  --red: #ef4444;
  --red-dim: rgba(239, 68, 68, 0.12);
  --amber: #f59e0b;
  --amber-dim: rgba(245, 158, 11, 0.12);
  --gradient-brand: linear-gradient(135deg, #8b5cf6, #06b6d4);
  --gradient-brand-dim: linear-gradient(135deg, rgba(139,92,246,0.15), rgba(6,182,212,0.15));
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ─── Layout ─── */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ─── Sidebar ─── */
.sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 1.5rem 1rem;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  overflow-y: auto;
}

.sidebar-logo {
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.5px;
  padding: 0 0.5rem;
  margin-bottom: 2rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
}

.sidebar-link:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.sidebar-link.active {
  background: var(--purple-dim);
  color: var(--purple);
}

.sidebar-link svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  margin-top: auto;
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
}

.sidebar-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--gradient-brand);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.75rem;
  color: white;
}

.sidebar-user-info {
  overflow: hidden;
}

.sidebar-user-email {
  font-size: 0.8rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 150px;
}

/* ─── Main content ─── */
.main-content {
  flex: 1;
  margin-left: 260px;
  padding: 2rem 2.5rem;
  min-height: 100vh;
}

.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}

/* ─── Cards ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition);
}

.card:hover {
  border-color: var(--border-hover);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.card-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.card-value {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

/* ─── API Key Card ─── */
.key-display {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9rem;
  color: var(--text-primary);
  margin: 0.75rem 0;
}

.key-display .key-text {
  flex: 1;
  -webkit-user-select: all;
  user-select: all;
}

.key-display .key-copy-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  border-radius: 4px;
  transition: all var(--transition);
}

.key-display .key-copy-btn:hover {
  color: var(--purple);
  background: var(--purple-dim);
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-brand);
  color: white;
}

.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.03);
}

.btn-danger {
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.2);
}

.btn-upgrade {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #1a1a2e;
  font-weight: 700;
}

.btn-upgrade:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* ─── Progress bars ─── */
.progress-container {
  margin: 1rem 0;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.progress-bar {
  height: 8px;
  background: var(--bg-secondary);
  border-radius: 100px;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: 100px;
  background: var(--gradient-brand);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-fill.warning { background: var(--amber); }
.progress-fill.danger { background: var(--red); }

/* ─── Tier badge ─── */
.tier-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.tier-badge.free {
  background: var(--cyan-dim);
  color: var(--cyan);
}

.tier-badge.pro {
  background: var(--purple-dim);
  color: var(--purple);
}

.tier-badge.enterprise {
  background: var(--green-dim);
  color: var(--green);
}

/* ─── Code playground ─── */
.code-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 0;
  border-bottom: 1px solid var(--border);
}

.code-tab {
  padding: 0.5rem 1rem;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
  font-family: inherit;
}

.code-tab.active {
  color: var(--purple);
  border-bottom-color: var(--purple);
}

.code-tab:hover {
  color: var(--text-primary);
}

.code-block {
  background: #0d0d17;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 var(--radius-sm) var(--radius-sm);
  padding: 1.25rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--text-secondary);
  overflow-x: auto;
  white-space: pre;
  position: relative;
}

.code-block .code-copy {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-muted);
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  font-size: 0.7rem;
  cursor: pointer;
  transition: all var(--transition);
}

.code-block .code-copy:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* ─── Auth forms ─── */
.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: var(--bg-primary);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-card);
}

.auth-card h1 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.25rem;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-card p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-group input {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--purple);
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.auth-error {
  background: var(--red-dim);
  color: var(--red);
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  margin-bottom: 1rem;
}

.auth-switch {
  text-align: center;
  margin-top: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--purple);
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
}

.auth-switch a:hover {
  text-decoration: underline;
}

/* ─── Utility ─── */
.text-green { color: var(--green); }
.text-amber { color: var(--amber); }
.text-red { color: var(--red); }
.text-purple { color: var(--purple); }
.text-cyan { color: var(--cyan); }
.text-muted { color: var(--text-muted); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* ─── Animations ─── */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeIn 0.4s ease both;
}

.animate-in:nth-child(2) { animation-delay: 0.05s; }
.animate-in:nth-child(3) { animation-delay: 0.1s; }
.animate-in:nth-child(4) { animation-delay: 0.15s; }