/* ================================
   AgNu - Black & White + Blue Toggles
   ================================ */

/* CSS Variables */
:root {
  /* Colors */
  --color-white: #ffffff;
  --color-black: #000000;
  --color-gray-50: #f9f9f9;
  --color-gray-100: #f2f2f2;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  --color-background: #ffffff;
  --color-surface: #f5f5f5;
  --color-text: #000000;
  --color-text-secondary: #555555;

  --color-border: #d4d4d4;
  --color-card-border: #e5e5e5;

  /* Buttons (monochrome) */
  --color-primary: #000000;
  --color-primary-hover: #333333;
  --color-primary-active: #111111;

  --color-secondary: #e5e5e5;
  --color-secondary-hover: #d4d4d4;
  --color-secondary-active: #c4c4c4;

  --color-btn-primary-text: #ffffff;

  /* Status */
  --color-success: #111111;
  --color-warning: #555555;
  --color-error: #222222;
  --color-info: #666666;

  /* Accent blue (for toggles only) */
  --color-toggle-blue: #007bff;
  --color-toggle-black: #000000;

  /* Radii */
  --radius-sm: 4px;
  --radius-base: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.10);
  --shadow-xl: 0 18px 40px rgba(0, 0, 0, 0.12);

  /* Spacing */
  --space-2: 2px;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-10: 10px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-40: 40px;
  --space-48: 48px;

  /* Typography */
  --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-family-mono: ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono",
    "Courier New", monospace;

  --font-size-xs: 11px;
  --font-size-sm: 13px;
  --font-size-base: 14px;
  --font-size-md: 15px;
  --font-size-lg: 17px;
  --font-size-xl: 20px;
  --font-size-2xl: 24px;
  --font-size-3xl: 28px;
  --font-size-4xl: 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;

  /* Motion */
  --duration-fast: 120ms;
  --duration-normal: 220ms;
  --ease-standard: cubic-bezier(0.2, 0.8, 0.2, 1);

  /* Focus */
  --focus-ring: 0 0 0 2px rgba(0, 0, 0, 0.7);
}

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

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

html {
  font-size: 16px;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  font-family: var(--font-family-base);
  background-color: var(--color-background);
  color: var(--color-text);
}

/* No global grayscale filter so toggles can be blue */

/* Typography */

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

p {
  margin: 0 0 var(--space-16);
  color: var(--color-text);
}

a {
  color: var(--color-text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  text-decoration-style: dashed;
}

/* Utility */

.hidden {
  display: none !important;
}

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

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

/* Header */

.header {
  background-color: var(--color-gray-100);
  border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-12) var(--space-24);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.logo-icon {
  width: 80px;
  height: 80px;
  /* border-radius: 50%; */
  object-fit: cover;
}

.logo h1 {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
}

.header-actions {
  display: flex;
  gap: var(--space-8);
}

/* Icon button */

.btn-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-base);
  border: 1px solid var(--color-white);
  background-color: var(--color-gray-100);
  color: var(--color-text);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--duration-fast) var(--ease-standard);
}

.btn-icon:hover {
  background-color: var(--color-gray-400);
  box-shadow: var(--shadow-xs);
}

.btn-icon svg {
  width: 20px;
  height: 20px;
}

/* Main */

.main-content {
  flex: 1;
  display: flex;
  position: relative;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-24) var(--space-24) var(--space-32);
  gap: var(--space-24);
}

/* ================================
   History Sidebar
   ================================ */

.history-sidebar {
  position: fixed;
  top: 0;
  right: -360px;
  width: 320px;
  height: 100vh;
  background-color: var(--color-white);
  border-left: 1px solid var(--color-gray-200);
  box-shadow: -8px 0 24px rgba(0, 0, 0, 0.08);
  padding: var(--space-16);
  display: flex;
  flex-direction: column;
  transition: right var(--duration-normal) var(--ease-standard);
  z-index: 20;
}

.history-sidebar.active {
  right: 0;
}

.sidebar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-12);
}

.sidebar-header h3 {
  font-size: var(--font-size-lg);
}

.btn-close {
  width: 32px;
  height: 32px;
}

.history-list {
  flex: 1;
  overflow-y: auto;
  padding-right: var(--space-4);
  margin-top: var(--space-8);
  margin-bottom: var(--space-12);
}

.history-empty {
  text-align: center;
  color: var(--color-text-secondary);
  padding: var(--space-32);
  font-size: var(--font-size-sm);
}

.history-item {
  padding: var(--space-10);
  background-color: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-base);
  margin-bottom: var(--space-8);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-standard);
}

.history-item:hover {
  border-color: var(--color-black);
  background-color: var(--color-gray-100);
}

.history-item-query {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--space-4);
}

.history-item-time {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ================================
   Search Container & Modes
   ================================ */

.search-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: var(--space-24);
  max-width: 900px;
  margin: 0 auto;
}

/* Search Modes row */

.search-modes {
  display: flex;
  gap: var(--space-16);
  justify-content: center;
  flex-wrap: wrap;
}

.mode-toggle {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-16);
  border: 1px solid var(--color-gray-200);
  display: inline-flex;
}

/* Toggle control */

.toggle-label {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  cursor: pointer;
  user-select: none;
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-slider {
  width: 44px;
  height: 24px;
  background: var(--color-gray-300);
  border-radius: var(--radius-full);
  position: relative;
  transition: all var(--duration-normal) var(--ease-standard);
}

.toggle-slider::after {
  content: "";
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: var(--color-white);
  border-radius: 50%;
  transition: transform var(--duration-normal) var(--ease-standard);
}

/* ✅ Blue toggles when checked */
.toggle-label input[type="checkbox"]:checked + .toggle-slider {
  background: var(--color-toggle-black);
  box-shadow: 0 0 6px rgba(255, 255, 255, 0.8);
}

.toggle-label input[type="checkbox"]:checked + .toggle-slider::after {
  transform: translateX(20px);
}

.toggle-text {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
}

.mode-icon {
  width: 18px;
  height: 18px;
}

/* ================================
   Search Box
   ================================ */

.search-box {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-gray-200);
}

.search-input-container {
  display: flex;
  gap: var(--space-8);
  align-items: center;
}

.search-input {
  flex: 1;
  border: none;
  background: transparent;
  padding: var(--space-12) var(--space-16);
  font-size: var(--font-size-xl);
  color: var(--color-text-primary);
  outline: none;
  font-family: var(--font-family-base);
}

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

/* Generate button */

.btn-search {
  background-color: var(--color-black);
  color: var(--color-btn-primary-text);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-10) var(--space-20);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  transition: all var(--duration-normal) var(--ease-standard);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.btn-search:hover {
  transform: translateY(-1px);
  background-color: var(--color-primary-hover);
}

.btn-search svg {
  width: 18px;
  height: 18px;
}

/* ================================
   Generic Buttons
   ================================ */

.btn {
  padding: var(--space-8) var(--space-16);
  border-radius: var(--radius-base);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-8);
  justify-content: center;
  transition: all var(--duration-normal) var(--ease-standard);
}

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

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

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

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

.btn--outline {
  background-color: var(--color-gray-100);
  border: 1px solid var(--color-white);
  color: var(--color-text);
}

.btn--outline:hover {
  background-color: var(--color-gray-400);
}

.btn--sm {
  padding: var(--space-6) var(--space-12);
  font-size: var(--font-size-xs);
}

/* Surprise Me button centered */

.surprise-btn {
  align-self: center;
}

/* ================================
   Query Analysis
   ================================ */

.query-analysis {
  background-color: var(--color-gray-50);
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  border: 1px solid var(--color-gray-200);
  font-size: var(--font-size-sm);
}

/* ================================
   Loading
   ================================ */

.loading-container {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-32);
}

.loading-animation {
  text-align: center;
}

.loading-dots {
  display: inline-flex;
  gap: 4px;
  margin-bottom: var(--space-8);
}

.loading-dots span {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background-color: var(--color-gray-500);
  animation: loading-bounce 1s infinite ease-in-out;
}

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

.loading-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ================================
   Results
   ================================ */

.results-container {
  animation: fadeIn 0.25s var(--ease-standard);
}

.result-card {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: var(--space-24);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-card-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-16);
}

/* Confidence badge */

.confidence-badge {
  align-self: flex-start;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-gray-300);
  background-color: var(--color-gray-100);
}

/* Response content */

.response-content {
  font-size: var(--font-size-md);
  line-height: 1.7;
  color: var(--color-text-primary);
}

/* Key points */

.key-points {
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--space-12);
  font-size: var(--font-size-sm);
}

.key-points ul {
  padding-left: 1.2rem;
  margin: 0;
}

/* Sources */

.sources-section {
  border-top: 1px dashed var(--color-gray-200);
  padding-top: var(--space-12);
  font-size: var(--font-size-xs);
  color: var(--color-text-primary);
}

/* Related topics */

.related-topics {
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--space-12);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
}

.related-topics button,
.related-topics .chip {
  padding: var(--space-4) var(--space-10);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-gray-300);
  background-color: var(--color-gray-50);
  font-size: var(--font-size-xs);
}

/* Result actions */

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  justify-content: flex-end;
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes loading-bounce {
  0%,
  80%,
  100% {
    transform: scale(0.7);
    opacity: 0.4;
  }
  40% {
    transform: scale(1);
    opacity: 1;
  }
}

/* ================================
   Responsive
   ================================ */

@media (max-width: 900px) {
  .main-content {
    flex-direction: column;
    padding: var(--space-16);
  }

  .header-content {
    gap: var(--space-12);
  }
}

@media (max-width: 768px) {
  .header {
    padding: var(--space-10) var(--space-16);
  }

  .logo h1 {
    font-size: var(--font-size-xl);
  }

  .search-modes {
    flex-direction: column;
    gap: var(--space-8);
  }

  .search-input {
    font-size: var(--font-size-lg);
  }

  .btn-search {
    padding: var(--space-10) var(--space-16);
  }

  .btn-search span {
    display: none;
  }

  .result-card {
    padding: var(--space-20);
  }

  .result-actions {
    flex-direction: column;
  }

  .result-actions .btn {
    width: 100%;
  }

  .history-sidebar {
    width: 100%;
    right: -100%;
  }

  .history-sidebar.active {
    right: 0;
  }
}
/* ================================
   Dark Mode
   ================================ */

:root[data-color-scheme="dark"] {
  /* Base */
  --color-background: #454853;         /* page bg */
  --color-surface: #020617;            /* cards / surfaces */
  --color-text: #f9fafb;
  --color-text-primary: #000000;
  --color-text-secondary: #94a3b8;

  /* Grays tuned for dark */
  --color-gray-50: #020617;
  --color-gray-100: #020617;
  --color-gray-200: #1e293b;
  --color-gray-300: #334155;
  --color-gray-400: #475569;
  --color-gray-500: #64748b;
  --color-gray-600: #94a3b8;
  --color-gray-700: #cbd5f5;
  --color-gray-800: #e2e8f0;
  --color-gray-900: #f9fafb;

  /* Borders & cards */
  --color-border: #1e293b;
  --color-card-border: #1f2937;

  /* Buttons */
  --color-primary: #171819;
  --color-primary-hover: #171819;
  --color-primary-active: #171819;
  --color-btn-primary-text: #ffffff;

  --color-secondary: #0b1120;
  --color-secondary-hover: #020617;
  --color-secondary-active: #020617;

  /* Status */
  --color-success: #22c55e;
  --color-warning: #eab308;
  --color-error: #f97316;
  --color-info: #38bdf8;

  /* Focus ring a bit lighter */
  --focus-ring: 0 0 0 2px rgba(148, 163, 184, 0.9);
}

/* Optional: smooth transition when toggling */
body {
  transition: background-color 0.2s ease, color 0.2s ease;
}