/* ==========================================================================
   VIET HAN CONCRETE — KHẢO SÁT & SÁNG KIẾN CHUYỂN ĐỔI SỐ
   Theme Palettes & Interactive Component Styling
   ========================================================================== */

:root,
html[data-theme="dark"] {
  --bg-canvas: #080a0f;
  --bg-surface: #0e121b;
  --bg-surface-elevated: #141a27;
  --bg-glass: rgba(14, 18, 27, 0.88);

  --navy-viethan: #1d3564;
  --navy-accent: #2b4c8c;
  --gray-viethan: #404040;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(56, 189, 248, 0.35);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  --hero-bg: linear-gradient(135deg, rgba(29, 53, 100, 0.45) 0%, rgba(14, 18, 27, 0.95) 100%);
  --card-bg: rgba(14, 18, 27, 0.85);
  --input-bg: #141a27;
  --input-border: rgba(255, 255, 255, 0.12);
  --input-focus-border: #38bdf8;
  --input-focus-ring: rgba(56, 189, 248, 0.25);

  --tab-active-bg: rgba(37, 99, 235, 0.2);
  --tab-active-text: #60a5fa;
  --tab-active-border: rgba(59, 130, 246, 0.4);

  --radio-bg: rgba(20, 26, 39, 0.6);
  --radio-active-bg: rgba(37, 99, 235, 0.15);
  --radio-active-border: #3b82f6;

  --idea-card-bg: rgba(20, 26, 39, 0.7);
  --idea-card-hover-border: rgba(56, 189, 248, 0.4);
}

html[data-theme="light"] {
  --bg-canvas: #f4f6fa;
  --bg-surface: #ffffff;
  --bg-surface-elevated: #f8fafc;
  --bg-glass: rgba(255, 255, 255, 0.92);

  --navy-viethan: #1d3564;
  --navy-accent: #2b4c8c;
  --gray-viethan: #475569;

  --border-subtle: rgba(29, 53, 100, 0.12);
  --border-card: #e2e8f0;
  --border-hover: rgba(29, 53, 100, 0.3);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  --hero-bg: linear-gradient(135deg, rgba(29, 53, 100, 0.08) 0%, rgba(255, 255, 255, 0.95) 100%);
  --card-bg: #ffffff;
  --input-bg: #f8fafc;
  --input-border: #cbd5e1;
  --input-focus-border: #1d3564;
  --input-focus-ring: rgba(29, 53, 100, 0.18);

  --tab-active-bg: #eff6ff;
  --tab-active-text: #1d4ed8;
  --tab-active-border: #bfdbfe;

  --radio-bg: #f8fafc;
  --radio-active-bg: #eff6ff;
  --radio-active-border: #2563eb;

  --idea-card-bg: #ffffff;
  --idea-card-hover-border: #3b82f6;
}

html[data-theme="navy"] {
  --bg-canvas: #091224;
  --bg-surface: #101e38;
  --bg-surface-elevated: #162a4d;
  --bg-glass: rgba(16, 30, 56, 0.92);

  --navy-viethan: #254580;
  --navy-accent: #38bdf8;
  --gray-viethan: #64748b;

  --border-subtle: rgba(56, 189, 248, 0.15);
  --border-card: #1e3a6c;
  --border-hover: rgba(56, 189, 248, 0.45);

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;

  --hero-bg: linear-gradient(135deg, rgba(37, 69, 128, 0.5) 0%, rgba(16, 30, 56, 0.98) 100%);
  --card-bg: #101e38;
  --input-bg: #162a4d;
  --input-border: #2b4c8c;
  --input-focus-border: #38bdf8;
  --input-focus-ring: rgba(56, 189, 248, 0.3);

  --tab-active-bg: rgba(56, 189, 248, 0.15);
  --tab-active-text: #38bdf8;
  --tab-active-border: rgba(56, 189, 248, 0.35);

  --radio-bg: #162a4d;
  --radio-active-bg: rgba(56, 189, 248, 0.18);
  --radio-active-border: #38bdf8;

  --idea-card-bg: #132442;
  --idea-card-hover-border: #38bdf8;
}

/* ================= Global Body & Container Styles ================= */
body {
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  min-height: 100vh;
  transition: background-color 0.25s ease, color 0.25s ease;
}

/* Header & Navbar */
.navbar-portal {
  background-color: var(--bg-glass);
  border-color: var(--border-subtle);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.back-home-btn {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}

.back-home-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
  transform: translateX(-2px);
}

.logo-wrapper {
  background-color: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
}

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

.badge-cds {
  background: rgba(37, 99, 235, 0.12);
  color: #3b82f6;
  border-color: rgba(37, 99, 235, 0.3);
}

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

.nav-tabs-wrapper {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
}

.tab-btn {
  color: var(--text-secondary);
  border: 1px solid transparent;
}

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

.tab-btn.active {
  background: var(--tab-active-bg);
  color: var(--tab-active-text);
  border-color: var(--tab-active-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.count-badge {
  background: rgba(59, 130, 246, 0.2);
  color: #60a5fa;
}

/* Theme Switcher in Sub-app */
.theme-switcher-box {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
}

.portal-theme-btn {
  width: 28px;
  height: 28px;
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
  transition: all 0.2s ease;
  line-height: 1;
}

.portal-theme-btn:hover {
  transform: scale(1.1);
}

.portal-theme-btn.active {
  background: var(--navy-viethan);
  border-color: var(--border-hover);
  box-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

/* Hero Card */
.hero-card {
  background: var(--hero-bg);
  border-color: var(--border-card);
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.2);
}

.tag-highlight {
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border-color: rgba(16, 185, 129, 0.25);
}

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

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

/* Content Cards */
.content-card {
  background: var(--card-bg);
  border-color: var(--border-card);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.15);
}

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

.status-pill-active {
  background: rgba(59, 130, 246, 0.12);
  color: #60a5fa;
  border-color: rgba(59, 130, 246, 0.25);
}

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

.input-field {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.input-field:focus {
  border-color: var(--input-focus-border);
  box-shadow: 0 0 0 3px var(--input-focus-ring);
}

/* Category & Survey Radio/Checkbox Cards */
.category-radio-card {
  background: var(--radio-bg);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.category-radio-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-1px);
}

.category-radio-card:has(input:checked) {
  background: var(--radio-active-bg);
  border-color: var(--radio-active-border);
  box-shadow: 0 2px 8px -2px rgba(37, 99, 235, 0.2);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  border-color: var(--border-subtle);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  color: var(--text-primary);
  border-color: var(--border-hover);
}

/* Idea / Community Board Cards */
.idea-card {
  background: var(--idea-card-bg);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.idea-card:hover {
  border-color: var(--idea-card-hover-border);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -10px rgba(0, 0, 0, 0.3);
}

.vote-btn {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.vote-btn:hover {
  border-color: #3b82f6;
  color: #3b82f6;
  background: rgba(59, 130, 246, 0.1);
}

.vote-btn.voted {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.4);
  color: #10b981;
}

/* Footer */
.footer-portal {
  background-color: var(--bg-surface);
  border-color: var(--border-subtle);
}

/* Toast Notification */
.toast-item {
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-hover);
  color: var(--text-primary);
  padding: 12px 18px;
  border-radius: 12px;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
  font-size: 13px;
  animation: slideInUp 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  pointer-events: auto;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}