/* ==========================================================================
   RankForge Linear/Vercel-Style Design System
   Clean, Flat, High-Precision SaaS Theme
   ========================================================================== */

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

:root {
  /* Color Palette - Flat & Precision */
  --bg-primary: #070b14;
  --bg-surface: #0d1117;
  --bg-card: #161b22;
  --bg-card-hover: #1c2128;
  --bg-subtle: #21262d;

  --border-color: #30363d;
  --border-subtle: #21262d;
  --border-focus: #2563eb;

  --accent-blue: #2563eb;
  --accent-blue-hover: #1d4ed8;
  --accent-blue-subtle: rgba(37, 99, 235, 0.12);

  --color-success: #10b981;
  --color-success-subtle: rgba(16, 185, 129, 0.12);
  --color-warning: #f59e0b;
  --color-warning-subtle: rgba(245, 158, 11, 0.12);
  --color-danger: #ef4444;
  --color-danger-subtle: rgba(239, 68, 68, 0.12);

  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --text-muted: #6e7681;
  --text-inverse: #070b14;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-full: 9999px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  scroll-behavior: smooth;
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em; }
h2 { font-size: 1.85rem; font-weight: 600; }
h3 { font-size: 1.35rem; font-weight: 600; }
h4 { font-size: 1.05rem; font-weight: 600; }
p { color: var(--text-secondary); }

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* Containers */
.container {
  width: 100%;
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 60px;
  display: flex;
  align-items: center;
}

.nav-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.brand-logo svg {
  width: 20px;
  height: 20px;
  color: var(--accent-blue);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Buttons - Linear/Vercel Flat Style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  text-decoration: none;
  font-family: inherit;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--accent-blue);
  color: #ffffff;
  border-color: var(--accent-blue);
}

.btn-primary:hover {
  background-color: var(--accent-blue-hover);
  border-color: var(--accent-blue-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: var(--bg-card);
  border-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: var(--bg-card-hover);
  border-color: #484f58;
  color: var(--text-primary);
}

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

.btn-outline:hover {
  border-color: var(--border-focus);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.82rem;
  border-radius: var(--radius-sm);
}

.btn-block {
  width: 100%;
}

/* Cards */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color 0.15s ease;
}

.card:hover {
  border-color: #484f58;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.badge-blue {
  background: var(--accent-blue-subtle);
  color: #60a5fa;
  border-color: rgba(37, 99, 235, 0.3);
}

.badge-success {
  background: var(--color-success-subtle);
  color: var(--color-success);
  border-color: rgba(16, 185, 129, 0.3);
}

.badge-warning {
  background: var(--color-warning-subtle);
  color: var(--color-warning);
  border-color: rgba(245, 158, 11, 0.3);
}

.badge-neutral {
  background: var(--bg-subtle);
  color: var(--text-secondary);
  border-color: var(--border-color);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--text-secondary);
}

.form-control {
  width: 100%;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.85rem;
  color: var(--text-primary);
  font-size: 0.9rem;
  font-family: inherit;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 2px var(--accent-blue-subtle);
}

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

/* Progress bar */
.progress-container {
  width: 100%;
  height: 6px;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 0.5rem 0;
}

.progress-bar {
  height: 100%;
  background-color: var(--accent-blue);
  border-radius: var(--radius-full);
  transition: width 0.3s ease;
}

/* Code Container */
.code-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 1rem 0;
}

.code-box-header {
  background-color: var(--bg-card);
  padding: 0.5rem 0.85rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.code-box pre {
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #c9d1d9;
  overflow-x: auto;
  line-height: 1.6;
}

/* Tables */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  background-color: var(--bg-card);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background-color: var(--bg-surface);
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color);
}

.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
}

.data-table tr:last-child td {
  border-bottom: none;
}

.data-table tr:hover td {
  background-color: var(--bg-card-hover);
}

/* Dashboard Sidebar Layout */
.dashboard-layout {
  display: flex;
  min-height: calc(100vh - 60px);
}

.dashboard-sidebar {
  width: 240px;
  background-color: var(--bg-surface);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-nav {
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.55rem 0.75rem;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  cursor: pointer;
  background: transparent;
  border: none;
  width: 100%;
  text-align: left;
  transition: all 0.15s ease;
}

.sidebar-link:hover {
  background-color: var(--bg-card);
  color: var(--text-primary);
}

.sidebar-link.active {
  background-color: var(--accent-blue-subtle);
  color: #60a5fa;
  font-weight: 600;
}

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

.dashboard-main {
  flex: 1;
  background-color: var(--bg-primary);
  padding: 2.5rem;
  overflow-y: auto;
}

.dashboard-panel {
  display: none;
}

.dashboard-panel.active {
  display: block;
}

/* Toast Alerts */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Footer */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  padding: 2.5rem 0;
  background-color: var(--bg-surface);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
  .dashboard-layout {
    flex-direction: column;
  }
  .dashboard-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }
  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
    padding: 0.5rem;
  }
  .dashboard-main {
    padding: 1.5rem;
  }
  .nav-links {
    display: none;
  }
}