/**
 * main.css
 * Core design tokens, typography, reset, and layout
 * Theme: Soft, clean, readable & eye-comfortable palette
 */

:root {
  /* Fonts */
  --font-heading: 'Prompt', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Light Theme (Warm minimal, soft clean colors) */
  --bg-app: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-subtle: #F1F5F9;
  --bg-surface-hover: #E2E8F0;
  --bg-card: #FFFFFF;
  
  --border-color: #E2E8F0;
  --border-subtle: #F1F5F9;
  --border-focus: #2563EB;

  --text-primary: #0F172A;
  --text-secondary: #334155;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;

  /* Primary */
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --primary-border: #BFDBFE;

  /* Accents */
  --accent-green: #059669;
  --accent-green-bg: #ECFDF5;
  --accent-green-border: #A7F3D0;

  --accent-blue: #0284C7;
  --accent-blue-bg: #F0F9FF;
  --accent-blue-border: #BAE6FD;

  --accent-amber: #D97706;
  --accent-amber-bg: #FFFBEB;
  --accent-amber-border: #FDE68A;

  --accent-rose: #DC2626;
  --accent-rose-bg: #FEF2F2;
  --accent-rose-border: #FECACA;

  /* Subsidy Special Pill */
  --subsidy-pill-bg: #FEF3C7;
  --subsidy-pill-text: #92400E;
  --subsidy-pill-border: #FCD34D;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08);
  --shadow-card: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.03);

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1160px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
}

/* Dark Theme */
[data-theme="dark"] {
  --bg-app: #0B1120;
  --bg-surface: #1E293B;
  --bg-surface-subtle: #141E33;
  --bg-surface-hover: #334155;
  --bg-card: #1E293B;

  --border-color: #334155;
  --border-subtle: #1E293B;
  --border-focus: #60A5FA;

  --text-primary: #F8FAFC;
  --text-secondary: #CBD5E1;
  --text-muted: #94A3B8;
  --text-inverse: #0F172A;

  --primary: #3B82F6;
  --primary-hover: #60A5FA;
  --primary-light: #172554;
  --primary-border: #2563EB;

  --accent-green: #34D399;
  --accent-green-bg: #064E3B;
  --accent-green-border: #059669;

  --accent-blue: #38BDF8;
  --accent-blue-bg: #082F49;
  --accent-blue-border: #0284C7;

  --accent-amber: #FBBF24;
  --accent-amber-bg: #451A03;
  --accent-amber-border: #B45309;

  --accent-rose: #F87171;
  --accent-rose-bg: #450A0A;
  --accent-rose-border: #DC2626;

  --subsidy-pill-bg: #372A15;
  --subsidy-pill-text: #FDE68A;
  --subsidy-pill-border: #78350F;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-card: 0 2px 6px 0 rgba(0, 0, 0, 0.3);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-app);
  color: var(--text-primary);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

.app-layout {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.brand-icon {
  font-size: 1.6rem;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.header-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  font-weight: 500;
  font-family: var(--font-heading);
  background-color: var(--bg-surface-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

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

.header-btn.primary {
  background-color: var(--primary);
  color: #FFFFFF;
  border-color: var(--primary);
  font-weight: 600;
}

.header-btn.primary:hover {
  background-color: var(--primary-hover);
}

.btn-plus {
  font-size: 1rem;
  line-height: 1;
}

.dropdown-wrapper {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.35rem);
  right: 0;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  min-width: 190px;
  padding: 0.35rem;
  display: none;
  flex-direction: column;
  z-index: 100;
}

.dropdown-wrapper:hover .dropdown-menu,
.dropdown-wrapper:focus-within .dropdown-menu {
  display: flex;
}

.dropdown-item {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  cursor: pointer;
}

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

.dropdown-item.danger {
  color: var(--accent-rose);
}

.dropdown-item.danger:hover {
  background-color: var(--accent-rose-bg);
}

.dropdown-divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0.25rem 0;
}

.main-content {
  flex: 1;
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem 1.25rem;
}

.app-footer {
  text-align: center;
  padding: 1.25rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  background-color: var(--bg-surface);
}