@charset "utf-8";
@import url('https://fonts.googleapis.com/css2?family=Kanit:wght@300;400;500;600;700&display=swap');
:root {
  --primary-color: #004e92;
  --gradient-start: #004e92;
  --gradient-end: #00b4db;
  --header-bg: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
  --card-bg: #ffffff;
  --input-bg: #ffffff;
  --input-border: #ced4da;
  --text-content: #333333;
  --reply-bg: #f8f9fa;
  --math-bg: #ffffff;
  --math-text: #004e92;
}
body {
  font-family: 'Kanit', sans-serif !important;
  background-color: var(--bg-color, #f5f5f5);
  color: var(--text-color, #333);
  margin: 0;
  padding: 0;
}
.main-content-fix {
  padding-top: 5rem;
}
.board-header-small {
  position: relative;
  height: 250px;
  width: 100%;
  color: white;
  background: var(--header-bg);
  background-image: radial-gradient(rgba(255, 255, 255, 0.1) 1px, transparent 1px), var(--header-bg);
  background-size: 20px 20px, 100% 100%;
  padding-bottom: 3rem;
}
.board-title-small {
  font-size: 1.8rem;
  font-weight: 600;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
  max-width: 900px;
  line-height: 1.4;
}
.mt-n5 {
  margin-top: -3rem !important;
}
.topic-card, .reply-card, .form-card {
  background-color: var(--card-bg);
  border-radius: 15px;
  overflow: hidden;
}
.card-header.bg-primary {
  background: var(--header-bg) !important;
  border-bottom: none;
}
.topic-heading {
  font-size: 1.5rem;
  line-height: 1.4;
  color: var(--primary-color);
}
.topic-content {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-content);
}
.reply-content {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-content);
}
.avatar-circle {
  width: 45px;
  height: 45px;
  background-color: #e9ecef;
  color: var(--primary-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.2rem;
}
.trap-field {
  display: none !important;
  visibility: hidden;
  opacity: 0;
  position: absolute;
  left: -9999px;
}
.form-control {
  background-color: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--text-content);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-family: 'Kanit', sans-serif;
}
.form-control:focus {
  background-color: var(--input-bg);
  color: var(--text-content);
  border-color: var(--gradient-end);
  box-shadow: 0 0 0 0.25rem rgba(0, 180, 219, 0.15);
}
.input-group-text {
  background-color: #f8f9fa;
  border: 1px solid var(--input-border);
  color: #6c757d;
  border-top-left-radius: 8px;
  border-bottom-left-radius: 8px;
}
.math-question {
  font-size: 1.2rem;
  color: var(--math-text);
  background-color: var(--math-bg);
  border: 1px solid var(--input-border) !important;
}
.btn-primary {
  background: var(--header-bg);
  border: none;
  transition: all 0.3s ease;
}
.btn-primary:hover {
  background: linear-gradient(135deg, var(--gradient-end), var(--gradient-start));
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 78, 146, 0.3);
}
/* --- Admin Style --- */
.admin-avatar {
  width: 45px;
  height: 45px;
  object-fit: cover;
  border-radius: 50%;
  border: 2px solid #0072ff;
  padding: 2px;
  background-color: #fff;
  box-shadow: 0 2px 5px rgba(0, 114, 255, 0.2);
}
.verified-badge {
  color: #0072ff;
  margin-left: 5px;
  font-size: 0.9rem;
  vertical-align: middle;
}
.bg-soft-primary {
  background-color: rgba(0, 114, 255, 0.05);
}
@media (max-width: 768px) {
  .main-content-fix {
    padding-top: 3.8rem;
  }
  .board-header-small {
    height: 200px;
  }
  .board-title-small {
    font-size: 1.4rem;
    padding: 0 1rem;
  }
  .mt-n5 {
    margin-top: -2rem !important;
  }
}
[data-theme="dark"] {
  --header-bg: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
  --card-bg: #1e1e1e;
  --input-bg: #2a2a2a;
  --input-border: #555;
  --text-content: #FFFFFF;
  --reply-bg: #2a2a2a;
  --math-bg: #333;
  --math-text: #FFFFFF;
}
[data-theme="dark"] body {
  background-color: #121212 !important;
  color: #FFFFFF !important;
}
[data-theme="dark"] .topic-card, [data-theme="dark"] .reply-card, [data-theme="dark"] .form-card {
  background-color: #1e1e1e !important;
  border: 1px solid #333 !important;
}
[data-theme="dark"] .topic-heading, [data-theme="dark"] .topic-content, [data-theme="dark"] .reply-content, [data-theme="dark"] h1, [data-theme="dark"] h2, [data-theme="dark"] h3, [data-theme="dark"] h4, [data-theme="dark"] h5, [data-theme="dark"] h6, [data-theme="dark"] strong, [data-theme="dark"] b, [data-theme="dark"] .fw-bold, [data-theme="dark"] .card-title {
  color: #FFFFFF !important;
}
[data-theme="dark"] .text-dark {
  color: #FFFFFF !important;
}
[data-theme="dark"] a:not(.btn) {
  color: #FFFFFF !important;
}
[data-theme="dark"] .text-muted, [data-theme="dark"] .small {
  color: #dedede !important;
}
[data-theme="dark"] .badge.bg-light.text-dark {
  background-color: #333 !important;
  color: #FFFFFF !important;
  border-color: #444 !important;
}
[data-theme="dark"] .card-header.bg-primary {
  background: linear-gradient(135deg, #0f172a 0%, #1e40af 100%) !important;
}
[data-theme="dark"] .form-control {
  background-color: #2a2a2a !important;
  border-color: #444 !important;
  color: #FFFFFF !important;
}
[data-theme="dark"] .input-group-text {
  background-color: #333 !important;
  border-color: #444 !important;
  color: #FFFFFF !important;
}
[data-theme="dark"] .bg-light {
  background-color: #252525 !important;
  border-color: #444 !important;
  color: #FFFFFF !important;
}
[data-theme="dark"] .math-question {
  background-color: #333 !important;
  border-color: #444 !important;
  color: #FFFFFF !important;
}
[data-theme="dark"] .avatar-circle {
  background-color: #333 !important;
  color: #FFFFFF !important;
  border: 1px solid #555;
}
[data-theme="dark"] .btn-link {
  color: #dedede !important;
}
[data-theme="dark"] .btn-primary {
  background: linear-gradient(135deg, #003366, #0056b3) !important;
  box-shadow: none !important;
}
[data-theme="dark"] hr {
  border-top: 1px solid #FFFFFF !important;
  opacity: 1 !important;
  background-color: #FFFFFF;
  margin-top: 1.5rem;
  margin-bottom: 1.5rem;
}
[data-theme="dark"] .border-bottom {
  border-bottom: 1px solid #666 !important;
}
[data-theme="dark"] .border-top {
  border-top: 1px solid #666 !important;
}
[data-theme="dark"] .bg-soft-primary {
  background-color: rgba(0, 114, 255, 0.15) !important;
  border-color: #004e92 !important;
}
[data-theme="dark"] .verified-badge {
  color: #4da3ff;
}
[data-theme="dark"] .admin-avatar {
  border-color: #4da3ff;
  background-color: #333;
}