/*
 * Vercel Light Theme Design System
 * Specification from design.md
 */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;450;500;600&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Colors */
  --color-paper-white: #fafafa;
  --color-pure-white: #ffffff;
  --color-hairline: #ebebeb;
  --color-ash: #c9c9c9;
  --color-smoke: #a8a8a8;
  --color-graphite: #8f8f8f;
  --color-slate: #7d7d7d;
  --color-stone: #666666;
  --color-charcoal: #4d4d4d;
  --color-obsidian: #171717;
  --color-carbon: #000000;
  --color-terminal-green: #297a3a;
  --color-danger-red: #e00000;
  --color-warning-amber: #f5a623;
  --color-spectrum-gradient: #ff1744;
  --gradient-spectrum-gradient: linear-gradient(90deg, rgb(0, 255, 149) 0%, rgb(255, 208, 0) 25%, rgb(255, 23, 68) 50%, rgb(149, 0, 255) 75%, rgb(0, 229, 255) 100%);
  --color-solar-edge: #ffdc30;
  --gradient-solar-edge: linear-gradient(90deg, rgb(255, 220, 48) 0%, rgb(56, 162, 255) 100%);

  /* Typography — Font Families */
  --font-geist-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-geist-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Typography — Scale */
  --text-eyebrow: 11px;
  --leading-eyebrow: 1.5;
  --text-caption: 13px;
  --leading-caption: 1.54;
  --text-body: 14px;
  --leading-body: 1.5;
  --text-heading: 28px;
  --leading-heading: 1.1;
  --tracking-heading: -1.5px;
  --text-heading-lg: 48px;
  --leading-heading-lg: 1;
  --tracking-heading-lg: -3px;

  /* Spacing */
  --spacing-4: 4px;
  --spacing-8: 8px;
  --spacing-12: 12px;
  --spacing-16: 16px;
  --spacing-20: 20px;
  --spacing-24: 24px;
  --spacing-32: 32px;

  /* Layout */
  --page-max-width: 1280px;
  --card-padding: 20px;

  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 6px;
  --radius-full: 9999px;
  --radius-nav: 2px;
  --radius-cards: 6px;
  --radius-buttons: 6px;

  /* Elevation via Stacked Hairline Box-Shadows */
  --shadow-subtle: rgba(0, 0, 0, 0.08) 0px 0px 0px 1px, rgb(250, 250, 250) 0px 0px 0px 1px;
  --shadow-subtle-2: rgb(235, 235, 235) 0px 0px 0px 1px;
  --shadow-dropdown: rgba(0, 0, 0, 0.08) 0px 4px 16px 0px, rgb(235, 235, 235) 0px 0px 0px 1px;

  /* Surfaces */
  --surface-page-canvas: #fafafa;
  --surface-card-surface: #ffffff;
  --surface-inverted-surface: #171717;
}

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

body {
  background-color: var(--surface-page-canvas);
  color: var(--color-obsidian);
  font-family: var(--font-geist-sans);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Layout Container */
.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
}

/* Header & Navigation Bar */
.top-nav {
  height: 64px;
  background-color: var(--surface-page-canvas);
  backdrop-filter: blur(20px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-hairline);
  display: flex;
  align-items: center;
}

.top-nav .nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  font-family: var(--font-geist-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-obsidian);
}

.triangle-glyph {
  font-size: 14px;
  color: var(--color-carbon);
}

.nav-links {
  display: flex;
  gap: var(--spacing-20);
}

.nav-tab-btn {
  background: transparent;
  border: none;
  font-family: var(--font-geist-sans);
  font-size: 14px;
  color: var(--color-slate);
  cursor: pointer;
  padding: var(--spacing-8) var(--spacing-12);
  border-radius: var(--radius-buttons);
  transition: all 0.15s ease;
}

.nav-tab-btn:hover {
  color: var(--color-obsidian);
}

.nav-tab-btn.active {
  color: var(--color-obsidian);
  background-color: var(--color-hairline);
  font-weight: 500;
}

.user-cluster {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
}

/* Eyebrow Label */
.eyebrow {
  font-family: var(--font-geist-mono);
  font-size: var(--text-eyebrow);
  letter-spacing: 0.071em;
  text-transform: uppercase;
  color: var(--color-charcoal);
  display: block;
  margin-bottom: var(--spacing-4);
}

/* Cards & Grid */
.grid-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-16);
  margin-top: var(--spacing-24);
}

.card {
  background-color: var(--surface-card-surface);
  border-radius: var(--radius-cards);
  padding: var(--card-padding);
  box-shadow: var(--shadow-subtle);
  border: 1px solid var(--color-hairline);
  transition: box-shadow 0.15s ease;
}

.stat-number {
  font-size: var(--text-heading);
  font-weight: 450;
  letter-spacing: var(--tracking-heading);
  line-height: var(--leading-heading);
  color: var(--color-obsidian);
  margin-top: var(--spacing-4);
}

.stat-meta {
  font-family: var(--font-geist-mono);
  font-size: 12px;
  color: var(--color-slate);
  margin-top: var(--spacing-8);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-8);
  font-family: var(--font-geist-sans);
  font-size: 13px;
  font-weight: 450;
  padding: 8px 16px;
  border-radius: var(--radius-buttons);
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
}

.btn-primary {
  background-color: var(--color-obsidian);
  color: var(--color-pure-white);
}

.btn-primary:hover {
  background-color: #000000;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-charcoal);
  box-shadow: 0 0 0 1px var(--color-hairline);
}

.btn-ghost:hover {
  background-color: #f2f2f2;
  color: var(--color-obsidian);
}

.btn-danger {
  background-color: #fff0f0;
  color: var(--color-danger-red);
  box-shadow: 0 0 0 1px #ffc9c9;
}

.btn-danger:hover {
  background-color: #ffe0e0;
}

.btn-sm {
  padding: 4px 10px;
  font-size: 12px;
}

/* Tables */
.table-container {
  background-color: var(--surface-card-surface);
  border-radius: var(--radius-cards);
  border: 1px solid var(--color-hairline);
  box-shadow: var(--shadow-subtle);
  overflow-x: auto;
  margin-top: var(--spacing-16);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  font-family: var(--font-geist-mono);
  font-size: var(--text-eyebrow);
  letter-spacing: 0.071em;
  text-transform: uppercase;
  color: var(--color-charcoal);
  background-color: #fcfcfc;
  padding: var(--spacing-12) var(--spacing-16);
  border-bottom: 1px solid var(--color-hairline);
}

td {
  padding: var(--spacing-12) var(--spacing-16);
  border-bottom: 1px solid var(--color-hairline);
  color: var(--color-obsidian);
  font-size: 13px;
}

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

tr:hover td {
  background-color: #fbfbfb;
}

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-geist-mono);
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.badge-active, .badge-online {
  background-color: #ecfdf3;
  color: var(--color-terminal-green);
  border: 1px solid #d1fadf;
}

.badge-banned, .badge-disabled {
  background-color: #fef3f2;
  color: var(--color-danger-red);
  border: 1px solid #fee4e2;
}

.badge-expired, .badge-paused {
  background-color: #fffaeb;
  color: var(--color-warning-amber);
  border: 1px solid #fef0c7;
}

.badge-maintenance, .badge-updating {
  background-color: #eff8ff;
  color: #175cd3;
  border: 1px solid #d1e9ff;
}

/* CLI Output Panel */
.cli-panel {
  background-color: var(--surface-card-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-cards);
  padding: var(--spacing-16);
  font-family: var(--font-geist-mono);
  font-size: 12px;
  color: var(--color-obsidian);
  max-height: 400px;
  overflow-y: auto;
  box-shadow: var(--shadow-subtle);
}

.cli-line {
  line-height: 1.8;
  display: flex;
  gap: var(--spacing-8);
}

.cli-prefix-command {
  color: var(--color-carbon);
  font-weight: 600;
}

.cli-prefix-success {
  color: var(--color-terminal-green);
  font-weight: 600;
}

.cli-prefix-warn {
  color: var(--color-warning-amber);
}

.cli-timestamp {
  color: var(--color-smoke);
}

/* Forms & Inputs */
.form-group {
  margin-bottom: var(--spacing-16);
}

.form-label {
  display: block;
  font-family: var(--font-geist-sans);
  font-size: 13px;
  color: var(--color-obsidian);
  font-weight: 450;
  margin-bottom: 6px;
}

.form-control {
  width: 100%;
  padding: 8px 12px;
  font-family: var(--font-geist-sans);
  font-size: 14px;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-buttons);
  background-color: var(--color-pure-white);
  color: var(--color-obsidian);
  outline: none;
  transition: all 0.15s ease;
}

.form-control:focus {
  border-color: var(--color-obsidian);
  box-shadow: 0 0 0 1px var(--color-obsidian);
}

/* Modals */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 999;
}

.modal-backdrop.open {
  display: flex;
}

.modal-dialog {
  background: var(--surface-card-surface);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-cards);
  width: 100%;
  max-width: 520px;
  padding: var(--spacing-24);
  box-shadow: var(--shadow-dropdown);
  animation: modalIn 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-20);
}

.modal-title {
  font-size: 20px;
  font-weight: 450;
  letter-spacing: -0.5px;
}

.close-btn {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--color-slate);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}

.toast {
  background: var(--surface-card-surface);
  border: 1px solid var(--color-hairline);
  padding: 12px 18px;
  border-radius: var(--radius-buttons);
  box-shadow: var(--shadow-dropdown);
  font-size: 13px;
  font-family: var(--font-geist-sans);
  display: flex;
  align-items: center;
  gap: 8px;
  animation: slideUp 0.2s ease;
}

@keyframes slideUp {
  from { transform: translateY(10px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}