/* ============================================
   Global CSS Variables - Premium Theme System
   ============================================

   This file defines CSS custom properties (variables) for consistent
   theming across the application. Features a premium enterprise aesthetic
   with sophisticated color palettes and refined typography.

   Light Theme: "Refined Pearl" - Clean, professional with warm undertones
   Dark Theme: "Obsidian Luxury" - Rich, sophisticated with teal accents
*/

/* ============================================
   CSS VARIABLES - Light Theme (Refined Pearl)
   ============================================ */

:root {
  /* Primary Colors - Slate 900 - Authoritative */
  --color-primary: #0f172a;
  --color-primary-hover: #1e293b;
  --color-primary-light: #334155;
  --color-primary-dark: #020617;

  /* Accent Color - Amber 600 - Luxury gold for CTAs */
  --color-accent: #d97706;
  --color-accent-hover: #b45309;
  --color-accent-light: #f59e0b;

  /* Background Colors - Clean with warm undertones */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #fafaf9;
  --color-bg-tertiary: #f5f5f4;
  --color-bg-hover: rgba(15, 23, 42, 0.04);

  /* Text Colors */
  --color-text-primary: #0f172a;
  --color-text-secondary: #334155;
  --color-text-tertiary: #64748b;
  --color-text-muted: #94a3b8;
  --color-text-inverse: #ffffff;

  /* Border Colors */
  --color-border-primary: rgba(15, 23, 42, 0.12);
  --color-border-secondary: rgba(15, 23, 42, 0.08);
  --color-border-focus: #0f172a;

  /* Form Input Colors */
  --color-input-bg: #ffffff;
  --color-input-border: rgba(15, 23, 42, 0.15);
  --color-input-focus: #0f172a;

  /* Status Colors - Success */
  --color-success: #059669;
  --color-success-bg: rgba(5, 150, 105, 0.08);
  --color-success-border: #059669;
  --color-success-text: #047857;

  /* Status Colors - Error */
  --color-error: #dc2626;
  --color-error-bg: rgba(220, 38, 38, 0.08);
  --color-error-border: #dc2626;
  --color-error-text: #b91c1c;

  /* Status Colors - Warning */
  --color-warning: #d97706;
  --color-warning-bg: rgba(217, 119, 6, 0.08);
  --color-warning-border: #d97706;
  --color-warning-text: #b45309;

  /* Status Colors - Info */
  --color-info: #2563eb;
  --color-info-bg: rgba(37, 99, 235, 0.08);
  --color-info-border: #2563eb;
  --color-info-text: #1d4ed8;

  /* Shadows - Layered depth system */
  --color-shadow-sm: rgba(15, 23, 42, 0.04);
  --color-shadow-md: rgba(15, 23, 42, 0.08);
  --color-shadow-lg: rgba(15, 23, 42, 0.12);
  --color-shadow-xl: rgba(15, 23, 42, 0.16);
  --color-shadow-glass: rgba(15, 23, 42, 0.06);

  /* Premium shadows */
  --shadow-sm: 0 1px 2px 0 var(--color-shadow-sm);
  --shadow-md: 0 4px 6px -1px var(--color-shadow-md), 0 2px 4px -2px var(--color-shadow-sm);
  --shadow-lg: 0 10px 15px -3px var(--color-shadow-lg), 0 4px 6px -4px var(--color-shadow-md);
  --shadow-xl: 0 20px 25px -5px var(--color-shadow-xl), 0 8px 10px -6px var(--color-shadow-lg);
  --shadow-premium: 0 25px 50px -12px rgba(15, 23, 42, 0.25);

  /* Glass Effect */
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(255, 255, 255, 0.4);
  --glass-blur: blur(12px);

  /* Border Radius - Slightly larger for modern feel */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
}

/* ============================================
   DARK THEME - Obsidian Luxury
   ============================================ */

[data-theme="dark"] {
  /* Primary Colors - Slate 50 - Clean white */
  --color-primary: #f8fafc;
  --color-primary-hover: #e2e8f0;
  --color-primary-light: #cbd5e1;
  --color-primary-dark: #ffffff;

  /* Accent Color - Teal 400 - Sophisticated cyan */
  --color-accent: #22d3d1;
  --color-accent-hover: #14b8a6;
  --color-accent-light: #5eead4;

  /* Background Colors - Rich near-black */
  --color-bg-primary: #0a0a0b;
  --color-bg-secondary: #09090b;
  --color-bg-tertiary: #121214;
  --color-bg-hover: rgba(34, 211, 209, 0.06);

  /* Text Colors - High Contrast */
  --color-text-primary: #f8fafc;
  --color-text-secondary: #e2e8f0;
  --color-text-tertiary: #94a3b8;
  --color-text-muted: #64748b;
  --color-text-inverse: #0a0a0b;

  /* Border Colors - Subtle */
  --color-border-primary: rgba(248, 250, 252, 0.12);
  --color-border-secondary: rgba(248, 250, 252, 0.08);
  --color-border-focus: #22d3d1;

  /* Form Input Colors */
  --color-input-bg: #0a0a0b;
  --color-input-border: rgba(248, 250, 252, 0.15);
  --color-input-focus: #22d3d1;

  /* Status Colors - Success (Emerald) */
  --color-success: #10b981;
  --color-success-bg: rgba(16, 185, 129, 0.12);
  --color-success-border: #10b981;
  --color-success-text: #34d399;

  /* Status Colors - Error (Rose) */
  --color-error: #f43f5e;
  --color-error-bg: rgba(244, 63, 94, 0.12);
  --color-error-border: #f43f5e;
  --color-error-text: #fb7185;

  /* Status Colors - Warning (Amber) */
  --color-warning: #f59e0b;
  --color-warning-bg: rgba(245, 158, 11, 0.12);
  --color-warning-border: #f59e0b;
  --color-warning-text: #fbbf24;

  /* Status Colors - Info (Sky) */
  --color-info: #0ea5e9;
  --color-info-bg: rgba(14, 165, 233, 0.12);
  --color-info-border: #0ea5e9;
  --color-info-text: #38bdf8;

  /* Shadows - Subtle glow effect */
  --color-shadow-sm: rgba(0, 0, 0, 0.4);
  --color-shadow-md: rgba(0, 0, 0, 0.5);
  --color-shadow-lg: rgba(0, 0, 0, 0.6);
  --color-shadow-xl: rgba(0, 0, 0, 0.7);
  --color-shadow-glass: rgba(0, 0, 0, 0.4);

  /* Premium shadows with subtle accent glow */
  --shadow-sm: 0 1px 2px 0 var(--color-shadow-sm);
  --shadow-md: 0 4px 6px -1px var(--color-shadow-md);
  --shadow-lg: 0 10px 15px -3px var(--color-shadow-lg);
  --shadow-xl: 0 20px 25px -5px var(--color-shadow-xl);
  --shadow-premium: 0 0 60px -12px rgba(34, 211, 209, 0.15);

  /* Glass Effect - Subtle glass */
  --glass-bg: rgba(10, 10, 11, 0.9);
  --glass-border: rgba(248, 250, 252, 0.08);
  --glass-blur: blur(12px);

  /* Slightly more rounded for modern dark theme */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.25rem;
}

/* Blue Accent Theme */
[data-theme="blue"] {
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  --color-primary-light: #3b82f6;
  --color-border-focus: #2563eb;
  --color-accent: #2563eb;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Subtle gradient background for light theme */
:root body {
  background-image:
    radial-gradient(at 0% 0%, rgba(15, 23, 42, 0.02) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(217, 119, 6, 0.02) 0px, transparent 50%);
}

[data-theme="dark"] body {
  background-image:
    radial-gradient(at 0% 0%, rgba(34, 211, 209, 0.03) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(34, 211, 209, 0.02) 0px, transparent 50%);
}

/* Headings with tighter letter-spacing */
h1, h2, h3, h4, h5, h6,
.text-xl, .text-2xl, .text-3xl, .text-4xl, .text-5xl {
  letter-spacing: var(--letter-spacing-tight);
}

/* ============================================
   FORM INPUTS
   ============================================ */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="datetime-local"],
textarea,
select {
  background-color: var(--color-input-bg);
  border: 1px solid var(--color-input-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  padding: 0.625rem 0.875rem;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  font-family: var(--font-family);
}

input:focus,
textarea:focus,
select:focus {
  border-color: var(--color-input-focus);
  outline: none;
  box-shadow: 0 0 0 3px var(--color-shadow-sm), 0 0 0 1px var(--color-input-focus);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
  box-shadow: 0 0 0 3px rgba(34, 211, 209, 0.15), 0 0 0 1px var(--color-input-focus);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.8;
}

/* Select dropdown styling for dark theme */
[data-theme="dark"] select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%2394a3b8' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right 0.5rem center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: 2.5rem;
}

/* ============================================
   LINKS
   ============================================ */

a {
  color: var(--color-primary);
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-hover);
}

[data-theme="dark"] a {
  color: var(--color-accent);
}

[data-theme="dark"] a:hover {
  color: var(--color-accent-light);
}

/* ============================================
   BUTTONS
   ============================================ */

.bg-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: background-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
}

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

.bg-primary:active {
  background-color: var(--color-primary-dark);
  color: var(--color-text-inverse);
  transform: scale(0.98);
}

.bg-primary.rounded-full {
  border-radius: 9999px;
}

/* Accent button styles */
.bg-accent {
  background-color: var(--color-accent);
  color: var(--color-text-inverse);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: background-color var(--transition-base), transform var(--transition-fast), box-shadow var(--transition-base);
}

.bg-accent:hover {
  background-color: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
}

/* Active/Selected state for navigation items */
.bg-primary.text-text-inverse,
.bg-primary.text-text-inverse:hover,
.bg-primary.text-text-inverse:active {
  color: var(--color-text-inverse) !important;
}

/* Ensure buttons with primary background always have correct text color */
button.bg-primary,
a.bg-primary,
input[type="submit"].bg-primary,
.bg-primary button,
.bg-primary a {
  color: var(--color-text-inverse) !important;
}

button.bg-primary:hover,
a.bg-primary:hover,
input[type="submit"].bg-primary:hover,
.bg-primary:hover button,
.bg-primary:hover a {
  color: var(--color-text-inverse) !important;
}

/* Secondary buttons with primary hover */
.bg-bg-tertiary.hover\:bg-primary-hover:hover,
a.bg-bg-tertiary.hover\:bg-primary-hover:hover,
button.bg-bg-tertiary.hover\:bg-primary-hover:hover {
  color: var(--color-text-inverse) !important;
}

/* Any element with bg-primary or hover:bg-primary-hover should have white text on hover */
.hover\:bg-primary-hover:hover {
  color: var(--color-text-inverse) !important;
}

/* Ensure text-text-inverse always shows white text */
.text-text-inverse {
  color: var(--color-text-inverse) !important;
}

/* ============================================
   CARDS - Premium Glass Effect
   ============================================ */

.bg-bg-primary {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

/* Card hover lift effect */
.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Glass effect utility class */
.glass {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-lg);
}

/* Premium card variant */
.card-premium {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

.card-premium:hover {
  box-shadow: var(--shadow-xl);
  transform: translateY(-2px);
}

/* ============================================
   KPI CARDS - Dashboard Statistics
   ============================================ */

.kpi-card {
  position: relative;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  padding: 1rem;
  transition: all var(--transition-base);
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--kpi-indicator-color, var(--color-accent));
  border-radius: var(--radius-xl) 0 0 var(--radius-xl);
}

.kpi-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.kpi-card--urgent {
  --kpi-indicator-color: var(--color-error);
}

.kpi-card--warning {
  --kpi-indicator-color: var(--color-warning);
}

.kpi-card--info {
  --kpi-indicator-color: var(--color-info);
}

.kpi-card--success {
  --kpi-indicator-color: var(--color-success);
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1;
}

.kpi-trend {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
}

.kpi-trend--up {
  color: var(--color-success-text);
}

.kpi-trend--down {
  color: var(--color-error-text);
}

/* ============================================
   TABLES
   ============================================ */

table {
  border-color: var(--color-border-primary);
}

thead {
  background-color: var(--color-bg-tertiary);
}

tbody tr {
  transition: background-color var(--transition-fast);
}

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

/* ============================================
   COLLAPSIBLE SECTIONS
   ============================================ */

.collapsible-section {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

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

.collapsible-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1rem;
  cursor: pointer;
  user-select: none;
  transition: background-color var(--transition-fast);
}

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

.collapsible-content {
  overflow: hidden;
  transition: max-height var(--transition-slow), opacity var(--transition-base);
}

.collapsible-content[data-collapsed="true"] {
  max-height: 0;
  opacity: 0;
}

.collapsible-content[data-collapsed="false"] {
  opacity: 1;
}

.collapsible-icon {
  transition: transform var(--transition-base);
}

.collapsible-icon[data-expanded="true"] {
  transform: rotate(180deg);
}

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

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

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

.text-secondary {
  color: var(--color-text-secondary);
}

.border-primary {
  border-color: var(--color-border-primary);
}

/* Accent utilities */
.text-accent {
  color: var(--color-accent);
}

.border-accent {
  border-color: var(--color-accent);
}

/* Premium spacing utilities */
.section-spacing {
  margin-bottom: 1.5rem;
}

@media (min-width: 1024px) {
  .section-spacing {
    margin-bottom: 2rem;
  }
}

/* ============================================
   QUICK ACTION CARDS
   ============================================ */

.quick-action-card {
  position: relative;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  padding: 1rem;
  transition: all var(--transition-base);
  cursor: pointer;
}

.quick-action-card:hover {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.quick-action-card--primary {
  border-color: var(--color-accent);
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-tertiary) 100%);
}

[data-theme="dark"] .quick-action-card--primary {
  background: linear-gradient(135deg, rgba(34, 211, 209, 0.08) 0%, var(--color-bg-primary) 100%);
}

.keyboard-hint {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 1.5rem;
  height: 1.5rem;
  padding: 0 0.375rem;
  font-size: 0.75rem;
  font-weight: 500;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-sm);
  color: var(--color-text-tertiary);
}

/* ============================================
   CHART CONTAINERS
   ============================================ */

.chart-container {
  position: relative;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-xl);
  padding: 1rem;
}

.chart-export-menu {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 10;
}

/* ============================================
   EXPORT DROPDOWN
   ============================================ */

.export-dropdown {
  position: relative;
  display: inline-block;
}

.export-dropdown-content {
  position: absolute;
  right: 0;
  top: 100%;
  margin-top: 0.5rem;
  min-width: 10rem;
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: 50;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all var(--transition-fast);
}

.export-dropdown[data-open="true"] .export-dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.export-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  color: var(--color-text-primary);
  transition: background-color var(--transition-fast);
}

.export-dropdown-item:hover {
  background-color: var(--color-bg-hover);
}

.export-dropdown-item:first-child {
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.export-dropdown-item:last-child {
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

/* ============================================
   DARK THEME ADJUSTMENTS
   ============================================ */

[data-theme="dark"] {
  /* Compact table cells */
  & table td,
  & table th {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
  }

  /* Compact form inputs */
  & input[type="text"],
  & input[type="email"],
  & input[type="password"],
  & input[type="number"],
  & input[type="date"],
  & input[type="datetime-local"],
  & textarea,
  & select {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
  }

  /* Tighter line height */
  & .prose {
    line-height: 1.6;
  }

  /* Accent glow effects */
  & .kpi-card:hover {
    box-shadow: var(--shadow-xl), 0 0 30px -10px rgba(34, 211, 209, 0.2);
  }

  & .quick-action-card:hover {
    box-shadow: var(--shadow-lg), 0 0 20px -8px rgba(34, 211, 209, 0.15);
  }
}