/**
 * Fragment.com Design System
 * Reverse-engineered from fragment.com
 * For Fragstat.org - Acquisition Ready
 */

:root {
  /* ============ Colors ============ */

  /* Backgrounds */
  --bg-primary: #000000;           /* Pure black - main background */
  --bg-secondary: #0a0a0a;         /* Slightly lighter - cards */
  --bg-tertiary: #111111;          /* Input backgrounds */
  --bg-hover: #1a1a1a;             /* Hover states */
  --bg-active: #222222;            /* Active/pressed states */

  /* Borders */
  --border-primary: #222222;       /* Main borders */
  --border-secondary: #333333;     /* Lighter borders */
  --border-focus: #0088cc;         /* Focus state */

  /* Text */
  --text-primary: #ffffff;         /* Main text */
  --text-secondary: #8a8a8a;       /* Muted text */
  --text-tertiary: #555555;        /* Very muted */
  --text-link: #0088cc;            /* Links */

  /* Accent - TON Blue */
  --accent: #0088cc;               /* Primary accent */
  --accent-hover: #0099dd;         /* Accent hover */
  --accent-active: #0077bb;        /* Accent pressed */

  /* Status Colors */
  --success: #3d9970;              /* Available, success - muted green */
  --success-bg: rgba(61, 153, 112, 0.15);
  --error: #e74c3c;                /* Taken, error */
  --error-bg: rgba(231, 76, 60, 0.1);
  --warning: #f39c12;              /* Pending, auction */
  --warning-bg: rgba(243, 156, 18, 0.1);
  --info: #3498db;                 /* Info states */

  /* Special */
  --ton-blue: #0088cc;             /* TON brand color */
  --telegram-blue: #2aabee;        /* Telegram brand color */
  --gold: #ffd700;                 /* Premium/special items */

  /* ============ Typography ============ */

  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Monaco, Consolas, monospace;

  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-md: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 32px;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.75;

  /* ============ Spacing ============ */

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* ============ Borders & Radius ============ */

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  --border-width: 1px;

  /* ============ Shadows ============ */

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);

  /* ============ Transitions ============ */

  --transition-fast: 0.1s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;

  /* ============ Z-Index Scale ============ */

  --z-base: 0;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
}

/* ============ Base Reset ============ */

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background: var(--bg-primary);
}

/* ============ Components ============ */

/* Buttons - Primary by default (accent color) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px 14px;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1;
  color: #000;
  background: var(--accent);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  position: relative;
}

/* Ensure clicks pass through to button */
.btn > * {
  pointer-events: none;
}

.btn:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn:active {
  transform: translateY(1px);
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Button loading state */
.btn.loading {
  color: transparent;
}

.btn.loading::after {
  content: '';
  position: absolute;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(0,0,0,0.3);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

/* Button Variants */
.btn-secondary {
  background: var(--bg-secondary);
  border: var(--border-width) solid var(--border-primary);
  color: var(--text-primary);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--accent);
  filter: none;
}

.btn-danger {
  background: var(--red, #ec3942);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  filter: brightness(1.15);
}

.btn-secondary.loading::after {
  border-color: rgba(255,255,255,0.3);
  border-top-color: var(--text-primary);
}

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

.btn-success {
  background: var(--success);
  color: #fff;
}

.btn-danger {
  background: var(--error);
  color: #fff;
}

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

.btn.retry-countdown {
  pointer-events: none;
  opacity: 0.6;
  min-width: 32px;
  font-size: 10px;
}

.btn-ghost {
  background: transparent;
  border: none;
  color: var(--text-primary);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-hover);
  filter: none;
}

/* Button Sizes */
.btn-sm {
  padding: 6px 12px;
  font-size: 12px;
}

.btn-xs {
  padding: 4px 8px;
  font-size: var(--font-size-xs);
}

.btn-lg {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-md);
}

.btn-icon {
  width: 28px;
  height: 28px;
  padding: 0;
  border-radius: 6px;
  font-size: 14px;
}

/* Watch Toggle Button (special) */
.btn-watch {
  background: transparent;
  border: var(--border-width) solid var(--border-primary);
  color: var(--text-secondary);
  padding: 4px 8px;
  font-size: 14px;
}

.btn-watch:hover:not(:disabled) {
  border-color: var(--warning);
  color: var(--warning);
  filter: none;
}

.btn-watch.active {
  background: rgba(243, 156, 18, 0.2);
  border-color: var(--warning);
  color: var(--warning);
}

.btn-watch.loading {
  color: transparent;
  border-color: var(--warning);
}

/* Inputs */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  color: var(--text-primary);
  background: var(--bg-tertiary);
  border: var(--border-width) solid var(--border-primary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

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

.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 136, 204, 0.2);
}

.input::placeholder {
  color: var(--text-tertiary);
}

/* Cards */
.card {
  background: var(--bg-secondary);
  border: var(--border-width) solid var(--border-primary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.card-header {
  padding: var(--space-4);
  border-bottom: var(--border-width) solid var(--border-primary);
}

.card-body {
  padding: var(--space-4);
}

/* Tables */
.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--space-3) var(--space-4);
  text-align: left;
  border-bottom: var(--border-width) solid var(--border-primary);
}

.table th {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table tbody tr:hover {
  background: var(--bg-hover);
}

/* Tabs */
.tabs {
  display: flex;
  gap: var(--space-1);
  padding: var(--space-1);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.tab {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.tab.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.tab-error {
  color: var(--error);
}

.tab-error:hover {
  color: var(--error);
  background: var(--error-bg);
}

.tab-error.active {
  color: #fff;
  background: var(--error);
}

.tab-count {
  opacity: 0.6;
  margin-left: var(--space-1);
  font-size: var(--font-size-xs);
}

/* Badges / Status */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
}

.badge-success {
  color: var(--success);
  background: var(--success-bg);
}

.badge-error {
  color: var(--error);
  background: var(--error-bg);
}

.badge-warning {
  color: var(--warning);
  background: var(--warning-bg);
}

/* Username Display */
.username {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.username::before {
  content: '@';
  color: var(--text-secondary);
}

/* Price Display */
.price {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-semibold);
  color: var(--warning);
}

.price-ton::before {
  content: '\1F48E ';
  font-size: 0.85em;
}

/* Keyboard Shortcuts */
kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  background: var(--bg-tertiary);
  border: var(--border-width) solid var(--border-secondary);
  border-radius: var(--radius-sm);
}

/* ============ Layout ============ */

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--bg-secondary);
  border-right: var(--border-width) solid var(--border-primary);
}

/* Main Content */
.main {
  flex: 1;
  background: var(--bg-primary);
}

/* ============ Utilities ============ */

.text-muted { color: var(--text-secondary); }
.text-success { color: var(--success); }
.text-error { color: var(--error); }
.text-warning { color: var(--warning); }

.bg-hover:hover { background: var(--bg-hover); }

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.mono { font-family: var(--font-mono); }

/* ============ Animations ============ */

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

.animate-fade-in { animation: fade-in var(--transition-normal); }
.animate-slide-up { animation: slide-up var(--transition-normal); }