/*
 * RCL Theme System v2.0
 * =====================
 * Professionelles Design mit Dark/Light Mode Support
 */

/* ============================================================================
   CSS VARIABLES - DESIGN TOKENS
   ============================================================================ */

:root {
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Spacing Scale */
  --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;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.2s ease;
  --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Z-Index Scale */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-tooltip: 400;
}

/* ============================================================================
   DARK THEME (Default)
   ============================================================================ */

[data-theme="dark"], :root {
  /* Backgrounds */
  --bg-primary: #0a0a12;
  --bg-secondary: #12121f;
  --bg-tertiary: #1a1a2e;
  --bg-elevated: #222238;
  --bg-hover: rgba(255, 255, 255, 0.04);
  --bg-active: rgba(255, 255, 255, 0.06);

  /* Text */
  --text-primary: #f0f0f5;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --text-inverse: #0a0a12;

  /* Borders */
  --border-primary: rgba(255, 255, 255, 0.08);
  --border-subtle: rgba(255, 255, 255, 0.04);
  --border-strong: rgba(255, 255, 255, 0.12);

  /* Surfaces */
  --surface-primary: rgba(255, 255, 255, 0.03);
  --surface-secondary: rgba(255, 255, 255, 0.05);
  --surface-elevated: rgba(255, 255, 255, 0.08);

  /* Accent Colors */
  --accent-primary: #FB8500;
  --accent-secondary: #F2295B;
  --accent-tertiary: #023047;
  --accent-bg: rgba(251, 133, 0, 0.12);
  --accent-bg-hover: rgba(251, 133, 0, 0.18);
  --accent-glow: rgba(251, 133, 0, 0.25);

  /* Semantic Colors - Success */
  --success: #10b981;
  --success-light: #34d399;
  --success-bg: rgba(16, 185, 129, 0.12);
  --success-bg-solid: #0d3d2e;
  --success-border: rgba(16, 185, 129, 0.3);

  /* Semantic Colors - Warning */
  --warning: #f59e0b;
  --warning-light: #fbbf24;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --warning-bg-solid: #3d2e0d;
  --warning-border: rgba(245, 158, 11, 0.3);

  /* Semantic Colors - Error */
  --error: #ef4444;
  --error-light: #f87171;
  --error-bg: rgba(239, 68, 68, 0.12);
  --error-bg-solid: #3d1414;
  --error-border: rgba(239, 68, 68, 0.3);

  /* Semantic Colors - Info */
  --info: #3b82f6;
  --info-light: #60a5fa;
  --info-bg: rgba(59, 130, 246, 0.12);
  --info-bg-solid: #142a4d;
  --info-border: rgba(59, 130, 246, 0.3);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px var(--accent-glow);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #FB8500 0%, #F2295B 100%);
  --gradient-bg: linear-gradient(180deg, #0a0a12 0%, #12121f 100%);
  --gradient-card: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  --gradient-shine: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.05) 50%, transparent 100%);

  /* Scrollbar */
  --scrollbar-track: rgba(255, 255, 255, 0.02);
  --scrollbar-thumb: rgba(255, 255, 255, 0.1);
  --scrollbar-thumb-hover: rgba(255, 255, 255, 0.2);

  /* Input */
  --input-bg: var(--bg-tertiary);
  --input-border: var(--border-primary);
  --input-focus-border: var(--accent-primary);
  --input-focus-shadow: 0 0 0 3px var(--accent-bg);

  /* Code */
  --code-bg: rgba(0, 0, 0, 0.3);
  --code-text: #FB8500;
}

/* ============================================================================
   LIGHT THEME
   ============================================================================ */

[data-theme="light"] {
  /* Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fc;
  --bg-tertiary: #eef0f5;
  --bg-elevated: #ffffff;
  --bg-hover: rgba(0, 0, 0, 0.04);
  --bg-active: rgba(0, 0, 0, 0.06);

  /* Text - Höherer Kontrast */
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-muted: #6b7280;
  --text-inverse: #ffffff;

  /* Borders */
  --border-primary: rgba(0, 0, 0, 0.1);
  --border-subtle: rgba(0, 0, 0, 0.06);
  --border-strong: rgba(0, 0, 0, 0.15);

  /* Surfaces */
  --surface-primary: rgba(0, 0, 0, 0.03);
  --surface-secondary: rgba(0, 0, 0, 0.05);
  --surface-elevated: rgba(0, 0, 0, 0.07);

  /* Accent Colors - Dunklere Varianten für bessere Lesbarkeit */
  --accent-primary: #E07800;
  --accent-secondary: #D91E4E;
  --accent-tertiary: #023047;
  --accent-bg: rgba(251, 133, 0, 0.1);
  --accent-bg-hover: rgba(251, 133, 0, 0.15);
  --accent-glow: rgba(251, 133, 0, 0.2);

  /* Semantic Colors - Success */
  --success: #047857;
  --success-light: #059669;
  --success-bg: rgba(4, 120, 87, 0.1);
  --success-bg-solid: #d1fae5;
  --success-border: rgba(4, 120, 87, 0.25);

  /* Semantic Colors - Warning */
  --warning: #d97706;
  --warning-light: #f59e0b;
  --warning-bg: rgba(217, 119, 6, 0.08);
  --warning-bg-solid: #fef3c7;
  --warning-border: rgba(217, 119, 6, 0.2);

  /* Semantic Colors - Error */
  --error: #dc2626;
  --error-light: #ef4444;
  --error-bg: rgba(220, 38, 38, 0.08);
  --error-bg-solid: #fee2e2;
  --error-border: rgba(220, 38, 38, 0.2);

  /* Semantic Colors - Info */
  --info: #2563eb;
  --info-light: #3b82f6;
  --info-bg: rgba(37, 99, 235, 0.08);
  --info-bg-solid: #dbeafe;
  --info-border: rgba(37, 99, 235, 0.2);

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 30px var(--accent-glow);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #FB8500 0%, #F2295B 100%);
  --gradient-bg: linear-gradient(180deg, #ffffff 0%, #f8f9fc 100%);
  --gradient-card: linear-gradient(180deg, rgba(0,0,0,0.01) 0%, transparent 100%);
  --gradient-shine: linear-gradient(90deg, transparent 0%, rgba(255,255,255,0.8) 50%, transparent 100%);

  /* Scrollbar */
  --scrollbar-track: rgba(0, 0, 0, 0.02);
  --scrollbar-thumb: rgba(0, 0, 0, 0.15);
  --scrollbar-thumb-hover: rgba(0, 0, 0, 0.25);

  /* Input */
  --input-bg: var(--bg-tertiary);
  --input-border: var(--border-primary);
  --input-focus-border: var(--accent-primary);
  --input-focus-shadow: 0 0 0 3px var(--accent-bg);

  /* Code */
  --code-bg: #f1f5f9;
  --code-text: #E07800;
}

/* ============================================================================
   BASE STYLES
   ============================================================================ */

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

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

body {
  font-family: var(--font-sans);
  background: var(--gradient-bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
  transition: background var(--transition-slow), color var(--transition-slow);
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--scrollbar-thumb-hover);
}

/* ============================================================================
   TYPOGRAPHY
   ============================================================================ */

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }
h5 { font-size: 1rem; }
h6 { font-size: 0.875rem; }

p {
  color: var(--text-secondary);
  line-height: 1.6;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

code, pre {
  font-family: var(--font-mono);
  font-size: 0.875em;
}

code {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

pre {
  background: var(--code-bg);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

/* ============================================================================
   ANIMATIONS
   ============================================================================ */

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

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes slideIn {
  from { transform: translateX(-100%); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}

.animate-fade-in { animation: fadeIn 0.3s ease-out; }
.animate-fade-in-up { animation: fadeInUp 0.4s ease-out; }
.animate-fade-in-down { animation: fadeInDown 0.3s ease-out; }
.animate-pulse { animation: pulse 2s infinite; }
.animate-spin { animation: spin 1s linear infinite; }
.animate-bounce { animation: bounce 1s infinite; }

/* ============================================================================
   THEME TOGGLE COMPONENT
   ============================================================================ */

.theme-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-primary);
  cursor: pointer;
  user-select: none;
}

.theme-toggle__icon {
  font-size: 16px;
  transition: transform var(--transition-base);
}

.theme-toggle__switch {
  width: 48px;
  height: 26px;
  background: var(--surface-elevated);
  border-radius: var(--radius-full);
  padding: 3px;
  transition: background var(--transition-slow);
  border: 1px solid var(--border-primary);
}

[data-theme="dark"] .theme-toggle__switch {
  background: var(--accent-primary);
  border-color: var(--accent-primary);
}

.theme-toggle__knob {
  width: 20px;
  height: 20px;
  background: white;
  border-radius: 50%;
  transition: transform var(--transition-slow);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .theme-toggle__knob {
  transform: translateX(22px);
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

/* Text Colors */
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-accent { color: var(--accent-primary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-error { color: var(--error); }
.text-info { color: var(--info); }

/* Background Colors */
.bg-primary { background: var(--bg-primary); }
.bg-secondary { background: var(--bg-secondary); }
.bg-tertiary { background: var(--bg-tertiary); }
.bg-elevated { background: var(--bg-elevated); }
.bg-accent { background: var(--accent-bg); }
.bg-success { background: var(--success-bg); }
.bg-warning { background: var(--warning-bg); }
.bg-error { background: var(--error-bg); }
.bg-info { background: var(--info-bg); }

/* Border */
.border { border: 1px solid var(--border-primary); }
.border-subtle { border: 1px solid var(--border-subtle); }
.border-strong { border: 1px solid var(--border-strong); }

/* Border Radius */
.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-full { border-radius: var(--radius-full); }

/* Shadows */
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Transitions */
.transition-fast { transition: all var(--transition-fast); }
.transition-base { transition: all var(--transition-base); }
.transition-slow { transition: all var(--transition-slow); }

/* Status Dot */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.status-dot--success { background: var(--success); }
.status-dot--warning { background: var(--warning); }
.status-dot--error { background: var(--error); }
.status-dot--info { background: var(--info); }
.status-dot--pulse { animation: pulse 2s infinite; }

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge--success { background: var(--success-bg); color: var(--success); }
.badge--warning { background: var(--warning-bg); color: var(--warning); }
.badge--error { background: var(--error-bg); color: var(--error); }
.badge--info { background: var(--info-bg); color: var(--info); }
.badge--accent { background: var(--accent-bg); color: var(--accent-primary); }

/* Cards */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card--elevated {
  background: var(--bg-elevated);
  box-shadow: var(--shadow-md);
}

.card__title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.btn--secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-primary);
}

.btn--secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-strong);
}

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

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

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.btn--lg {
  padding: 16px 32px;
  font-size: 16px;
}

.btn--icon {
  padding: 12px;
}

/* Inputs */
.input {
  width: 100%;
  padding: 14px 18px;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  transition: all var(--transition-base);
  outline: none;
}

.input:focus {
  border-color: var(--input-focus-border);
  box-shadow: var(--input-focus-shadow);
}

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

.input--sm {
  padding: 10px 14px;
  font-size: 13px;
}

.input--lg {
  padding: 18px 22px;
  font-size: 16px;
}

/* Tables */
.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.table th {
  text-align: left;
  padding: 14px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border-primary);
  background: var(--surface-primary);
}

.table td {
  padding: 16px;
  font-size: 14px;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast);
}

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

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

/* ============================================================================
   COMPONENT: HEADER
   ============================================================================ */

.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-8);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-primary);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  backdrop-filter: blur(20px);
}

[data-theme="dark"] .header {
  background: rgba(10, 10, 18, 0.85);
}

[data-theme="light"] .header {
  background: rgba(255, 255, 255, 0.9);
}

.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  box-shadow: 0 4px 20px var(--accent-glow);
}

.header__logo-text {
  font-family: "IBM Plex Sans", sans-serif;
  font-size: 22px;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.header__tagline {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: var(--space-4);
  padding-left: var(--space-4);
  border-left: 1px solid var(--border-primary);
}

/* ============================================================================
   COMPONENT: NAVIGATION
   ============================================================================ */

.nav {
  display: flex;
  gap: 4px;
  padding: 4px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
}

.nav__tab {
  padding: 10px 16px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.nav__tab:hover {
  color: var(--text-secondary);
  background: var(--bg-hover);
}

.nav__tab--active {
  background: var(--bg-elevated);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* ============================================================================
   COMPONENT: KPI CARDS
   ============================================================================ */

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-5);
}

.kpi-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.kpi-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.kpi-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.kpi-card:hover::before {
  opacity: 1;
}

.kpi-card__icon {
  position: absolute;
  top: var(--space-5);
  right: var(--space-5);
  font-size: 32px;
  opacity: 0.12;
}

.kpi-card__value {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -1px;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.kpi-card__label {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}

.kpi-card__trend {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: var(--space-3);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 600;
}

.kpi-card__trend--up {
  background: var(--success-bg);
  color: var(--success);
}

.kpi-card__trend--down {
  background: var(--error-bg);
  color: var(--error);
}

/* ============================================================================
   COMPONENT: FORMS
   ============================================================================ */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--space-2);
}

.form-error {
  font-size: 12px;
  color: var(--error);
  margin-top: var(--space-2);
}

/* ============================================================================
   COMPONENT: ALERTS & BANNERS
   ============================================================================ */

.alert {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
}

.alert--success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid var(--success-border);
}

.alert--warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid var(--warning-border);
}

.alert--error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid var(--error-border);
}

.alert--info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid var(--info-border);
}

/* ============================================================================
   COMPONENT: LOADING STATES
   ============================================================================ */

.skeleton {
  background: linear-gradient(
    90deg,
    var(--surface-primary) 25%,
    var(--surface-secondary) 50%,
    var(--surface-primary) 75%
  );
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.loading-dots {
  display: flex;
  gap: 4px;
}

.loading-dots span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-primary);
  animation: bounce 1s infinite;
}

.loading-dots span:nth-child(2) { animation-delay: 0.15s; }
.loading-dots span:nth-child(3) { animation-delay: 0.3s; }

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 1024px) {
  .header {
    padding: var(--space-4);
  }

  .nav {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header {
    flex-direction: column;
    gap: var(--space-4);
  }

  .header__tagline {
    display: none;
  }

  .kpi-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  :root {
    font-size: 14px;
  }

  .btn {
    width: 100%;
  }
}