/* 
   HedroxSolver - Minimalist "Early Google" Theme
   Light (default) + Dark mode via toggle.
*/

:root {
  --text: #202124;
  --bg: #ffffff;
  --link: #1a0dab;
  --link-visited: #660099;
  --border: #dfe1e5;
  --hover: #f1f3f4;
  --accent: #1a73e8;
  --shadow: 0 1px 6px rgba(32,33,36,0.28);
  --card-bg: #fff;
  --code-bg: #e8eaed;
  --snippet-text: #4d5156;
  --expand-bg: #f8f9fa;
}

[data-theme="dark"] {
  --text: #e8eaed;
  --bg: #1a1a2e;
  --link: #8ab4f8;
  --link-visited: #c58af9;
  --border: #3c4043;
  --hover: #2d2d44;
  --accent: #8ab4f8;
  --shadow: 0 1px 6px rgba(0,0,0,0.5);
  --card-bg: #22223a;
  --code-bg: #2d2d44;
  --snippet-text: #bdc1c6;
  --expand-bg: #2d2d44;
}

/* Theme Toggle Button */
.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  color: var(--text);
}
.theme-toggle:hover { background: var(--hover); }

* { box-sizing: border-box; }

body {
  font-family: Arial, sans-serif;
  color: var(--text);
  background-color: var(--bg);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

header {
  display: flex;
  justify-content: flex-end;
  padding: 16px 24px;
  font-size: 13px;
  border-bottom: 1px solid transparent;
}

header a {
  color: var(--text);
  text-decoration: none;
  margin-left: 16px;
}
header a:hover { text-decoration: underline; }

.main-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 10vh; /* Centered-ish like Google */
  width: 100%;
}

/* Logo */
.logo-container {
  margin-bottom: 30px;
}
.logo-container img {
  height: 80px;
}

/* Search Box */
.search-wrapper {
  width: 100%;
  max-width: 584px;
  position: relative;
  margin-bottom: 24px;
}

.search-input {
  width: 100%;
  height: 46px;
  padding: 0 20px;
  font-size: 16px;
  border: 1px solid var(--border);
  border-radius: 24px;
  outline: none;
  transition: box-shadow 0.2s;
}

.search-input:hover, .search-input:focus {
  box-shadow: var(--shadow);
  border-color: transparent;
}

/* Dataset Filter (Autocomplete) */
.dataset-wrapper {
  width: 100%;
  max-width: 584px;
  margin-bottom: 30px;
  text-align: center;
  position: relative;
}

.dataset-input {
  width: 250px;
  padding: 8px 14px;
  font-size: 13px;
  border: 1px solid var(--border);
  border-radius: 6px;
  outline: none;
}
.dataset-input:focus { border-color: var(--accent); }

.dataset-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  width: 250px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 6px 6px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  z-index: 100;
  text-align: left;
}
.dataset-item {
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
}
.dataset-item:hover { background: var(--hover); }

/* Selected Chips */
.chip {
  display: inline-flex;
  align-items: center;
  background: var(--hover);
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 13px;
  margin: 4px;
  border: 1px solid var(--border);
}
.chip-close {
  margin-left: 6px;
  cursor: pointer;
  color: #70757a;
}
.chip-close:hover { color: #000; }

/* Results Area */
.results-wrapper {
  width: 100%;
  max-width: 652px;
  margin: 0 auto;
  padding: 0 16px 40px;
  text-align: left;
}

/* Clean result block — matches search input style */
.result-block {
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 16px 20px;
  margin-bottom: 12px;
  background: var(--card-bg);
  transition: box-shadow 0.2s;
}
.result-block:hover {
  box-shadow: var(--shadow);
}

.result-title {
  font-size: 16px;
  color: var(--link);
  text-decoration: none;
  margin-bottom: 4px;
  display: block;
}
.result-title:hover { text-decoration: underline; }
.result-snippet {
  font-size: 14px;
  color: var(--snippet-text);
  line-height: 1.58;
}

/* Utils */
.hidden { display: none !important; }

/* Rendered markdown — shared by expanded results + AI chat */
.full-content, .md-rendered {
  margin-top: 8px;
  padding: 14px 18px;
  background: var(--expand-bg);
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.7;
  max-height: 500px;
  overflow-y: auto;
}
.full-content h1, .full-content h2, .full-content h3,
.md-rendered h1, .md-rendered h2, .md-rendered h3 {
  margin: 12px 0 6px;
  color: var(--text);
}
.full-content h1, .md-rendered h1 { font-size: 18px; }
.full-content h2, .md-rendered h2 { font-size: 16px; }
.full-content h3, .md-rendered h3 { font-size: 15px; }
.full-content h4, .md-rendered h4 { font-size: 14px; font-weight: 600; }
.full-content p, .md-rendered p { margin: 6px 0; }
.full-content ul, .full-content ol,
.md-rendered ul, .md-rendered ol {
  padding-left: 20px;
  margin: 6px 0;
}
.full-content li, .md-rendered li { margin: 3px 0; }
.full-content code, .md-rendered code {
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
  font-family: 'Courier New', monospace;
}
.full-content pre, .md-rendered pre {
  background: var(--code-bg);
  padding: 10px;
  border-radius: 8px;
  overflow-x: auto;
}
.full-content pre code, .md-rendered pre code {
  background: none;
  padding: 0;
}
.full-content blockquote, .md-rendered blockquote {
  border-left: 3px solid var(--border);
  padding-left: 12px;
  color: var(--snippet-text);
  margin: 8px 0;
}
.full-content a, .md-rendered a {
  color: var(--link);
  cursor: pointer;
}
.full-content a:hover, .md-rendered a:hover {
  text-decoration: underline;
}
.md-rendered table {
  border-collapse: collapse;
  margin: 8px 0;
  width: 100%;
}
.md-rendered th, .md-rendered td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  font-size: 13px;
  text-align: left;
}
.md-rendered th { background: var(--code-bg); font-weight: 600; }
.md-rendered hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }

/* Chat inline markdown (no extra padding/bg) */
.chat-bubble .md-rendered {
  margin: 0;
  padding: 0;
  background: none;
  max-height: none;
  overflow: visible;
  border-radius: 0;
}

/* ── Chat Widget ── */
.chat-wrap {
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 16px 20px;
  margin-bottom: 12px;
  background: var(--card-bg);
}
.chat-header {
  font-size: 15px;
  cursor: pointer;
  color: var(--text);
}
.chat-messages {
  max-height: 400px;
  overflow-y: auto;
  padding: 8px 0;
}
.chat-msg { margin-bottom: 10px; }
.chat-msg.user .chat-bubble {
  background: var(--accent);
  color: #fff;
  margin-left: 20%;
  border-radius: 16px 16px 4px 16px;
}
.chat-msg.bot .chat-bubble {
  background: var(--expand-bg);
  color: var(--text);
  margin-right: 20%;
  border-radius: 16px 16px 16px 4px;
}
.chat-bubble {
  padding: 10px 14px;
  font-size: 14px;
  line-height: 1.6;
  word-wrap: break-word;
}
.chat-input-area {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.chat-input {
  flex: 1;
  padding: 8px 14px;
  font-size: 14px;
  border: 1px solid var(--border);
  border-radius: 20px;
  outline: none;
  background: var(--bg);
  color: var(--text);
}
.chat-input:focus { border-color: var(--accent); }
.chat-send-btn {
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  cursor: pointer;
  font-size: 16px;
}
.chat-send-btn:hover { opacity: 0.85; }
.chat-send-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Action Buttons */
.action-buttons-row {
  display: flex;
  gap: 8px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.action-btn {
  padding: 6px 12px;
  font-size: 12px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card-bg);
  color: var(--text);
  cursor: pointer;
  position: relative;
  transition: background 0.2s;
}
.action-btn:hover { background: var(--hover); }
.action-tooltip {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: #333;
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  white-space: normal;
  width: 220px;
  z-index: 10;
  line-height: 1.4;
}
.action-btn:hover .action-tooltip { display: block; }

/* Search input dark mode fix */
[data-theme="dark"] .search-input {
  background: var(--card-bg);
  color: var(--text);
  border-color: var(--border);
}
[data-theme="dark"] .dataset-input {
  background: var(--card-bg);
  color: var(--text);
}
[data-theme="dark"] #login-modal > div {
  background: var(--card-bg);
  color: var(--text);
}

/* ── Responsive Breakpoints ── */
/* Tablet+ */
@media (min-width: 768px) {
  .results-wrapper { max-width: 85vw; }
  .chat-wrap { max-width: 85vw; }
  .search-wrapper { max-width: 70vw; }
  .dataset-wrapper { max-width: 70vw; }
}
/* Desktop */
@media (min-width: 1200px) {
  .results-wrapper { max-width: 900px; }
  .chat-wrap { max-width: 900px; }
  .search-wrapper { max-width: 700px; }
  .dataset-wrapper { max-width: 700px; }
}
/* Wide screens */
@media (min-width: 1600px) {
  .results-wrapper { max-width: 1100px; }
  .chat-wrap { max-width: 1100px; }
  .search-wrapper { max-width: 800px; }
  .dataset-wrapper { max-width: 800px; }
}