/* =============================================
   Design Token & Base
   ============================================= */
:root {
  --primary:        #2563eb;
  --primary-dark:   #1d4ed8;
  --primary-light:  #eff6ff;
  --success:        #16a34a;
  --danger:         #dc2626;
  --warning:        #d97706;
  --text-primary:   #111827;
  --text-secondary: #6b7280;
  --text-muted:     #767676;
  --border:         #e5e7eb;
  --bg-base:        #f9fafb;
  --bg-white:       #ffffff;
  --bg-sidebar:     #f3f4f6;
  --radius:         8px;
  --radius-sm:      4px;
  --radius-lg:      12px;
  --shadow-sm:      0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow:         0 4px 6px -1px rgba(0,0,0,.07), 0 2px 4px -1px rgba(0,0,0,.04);
  --shadow-md:      0 10px 15px -3px rgba(0,0,0,.08), 0 4px 6px -2px rgba(0,0,0,.04);
  --transition:     .15s ease;
}

/* =============================================
   Reset & Global
   ============================================= */
*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB",
               "Microsoft YaHei", sans-serif;
  font-size: 14px;
  color: var(--text-primary);
  background: var(--bg-base);
  margin: 0;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); text-decoration: underline; }

label { color: var(--text-secondary); font-weight: 500; margin-bottom: 4px; }
label.error { color: var(--danger); }

/* =============================================
   Bootstrap Override — Buttons
   ============================================= */
.btn {
  border-radius: var(--radius-sm);
  font-size: 14px;
  padding: 7px 18px;
  font-weight: 500;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
}
.btn-success {
  background: var(--success);
  border-color: var(--success);
  color: #fff;
  padding-left: 18px;
  padding-right: 18px;
}
.btn-success:hover { background: #15803d; border-color: #15803d; color: #fff; }
.btn-default {
  background: #fff;
  border-color: var(--border);
  color: var(--text-primary);
}
.btn-default:hover { background: var(--bg-base); border-color: #d1d5db; }
.btn-link { color: var(--primary); }
.btn-sm { padding: 5px 14px; font-size: 13px; border-radius: var(--radius-sm); }
.btn-xs { padding: 3px 10px; font-size: 12px; border-radius: var(--radius-sm); line-height: 1.5; }
.btn-warning { background: var(--warning); border-color: var(--warning); color: #fff; }
.btn-warning:hover, .btn-warning:focus { background: #b45309; border-color: #b45309; color: #fff; }
.btn-danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn-danger:hover, .btn-danger:focus { background: #b91c1c; border-color: #b91c1c; color: #fff; }
.max-width { width: 100%; }

/* =============================================
   Bootstrap Override — Forms
   ============================================= */
.form-control {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: none;
  font-size: 14px;
  color: var(--text-primary);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
  outline: none;
}
.form-group { margin-bottom: 16px; }
.input-group-addon {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.input-group-addon:hover { cursor: pointer; background: var(--primary-dark); }

/* =============================================
   Bootstrap Override — Table
   ============================================= */
.table > thead > tr > th {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
  border-bottom: 1px solid var(--border);
  border-top: none;
  padding: 10px 12px;
  background: var(--bg-base);
}
.table > tbody > tr > td {
  padding: 12px;
  border-color: var(--border);
  vertical-align: middle;
}
.table-hover > tbody > tr:hover { background: var(--primary-light); }
/* Table row cursor & actions */
#video-tbody tr { cursor: pointer; }
.row-actions { display: inline-flex; align-items: center; gap: 4px; opacity: 0; transition: opacity var(--transition); }
#video-tbody tr:hover .row-actions { opacity: 1; }

/* =============================================
   Bootstrap Override — Pagination
   ============================================= */
.pagination { margin: 0; }
.pagination > li > a,
.pagination > li > span {
  color: var(--primary);
  border-color: var(--border);
  border-radius: var(--radius-sm) !important;
  margin: 0 2px;
  min-width: 34px;
  height: 32px;
  line-height: 32px;
  padding: 0 10px;
  text-align: center;
  font-size: 13px;
}
.pagination > .active > a,
.pagination > .active > span,
.pagination > .active > a:hover,
.pagination > .active > span:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}
.pagination > .disabled > a,
.pagination > .disabled > span { color: var(--text-muted); background: var(--bg-base); border-color: var(--border); cursor: default; }
.pagination > li > a:hover { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }

/* =============================================
   Bootstrap Override — Modal
   ============================================= */
.modal-content {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}
.modal-header {
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
}
.modal-footer {
  border-top: 1px solid var(--border);
  padding: 12px 20px;
}
.modal.fade.in { top: 10%; }

/* =============================================
   Layout — Navigation Bar
   ============================================= */
.navbar-top {
  height: 56px;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}
.navbar-top .brand {
  font-weight: 700;
  font-size: 18px;
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}
.navbar-top .brand:hover { text-decoration: none; }
.navbar-top .nav-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 12px;
}

/* =============================================
   Layout — Sidebar
   ============================================= */
.left-menu {
  background: var(--bg-sidebar);
  border-radius: var(--radius);
  padding: 12px 0;
}
.left-menu .nav > li > a {
  color: var(--text-secondary);
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  margin: 2px 8px;
  font-size: 14px;
  display: block;
  transition: all var(--transition);
}
.left-menu .nav > li > a:hover {
  background: #e5e7eb;
  color: var(--text-primary);
  text-decoration: none;
}
.left-menu .nav > li.active > a {
  background: var(--primary-light);
  color: var(--primary);
  font-weight: 500;
}
.left-menu .text-muted {
  padding: 8px 18px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-muted);
  display: block;
}

/* =============================================
   Layout — Content Block (Card)
   ============================================= */
.content-block {
  background: var(--bg-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  margin-bottom: 16px;
  padding: 20px;
}
.content-block legend,
.content-block .block-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

/* =============================================
   Component — Form Panel (Login / Register)
   ============================================= */
.form-panel {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow);
  max-width: 440px;
  margin: 0 auto;
}
.form-panel .form-header {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 24px;
}
.form-panel .logo-wrap {
  text-align: center;
  margin-bottom: 20px;
}
.form-panel .logo-wrap img { height: 42px; }
/* Legacy compatibility */
.form-border {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  background: var(--bg-white);
  box-shadow: var(--shadow-sm);
}
.form-header {
  font-size: 18px;
  font-weight: 600;
  text-align: center;
  margin-bottom: 20px;
  color: var(--text-primary);
}

/* =============================================
   Component — Avatar Circle
   ============================================= */
.avatar-circle {
  width: 36px;
  height: 36px;
  background: #bfdbfe;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  flex-shrink: 0;
}
/* Legacy */
#first_letter {
  width: 34px;
  height: 34px;
  background: #bfdbfe;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary);
  vertical-align: middle;
}

/* =============================================
   Component — Alert
   ============================================= */
.alert {
  border-radius: var(--radius-sm);
  border: none;
  font-size: 14px;
  padding: 10px 16px;
}
.alert-error, .alert-danger {
  background: #fef2f2;
  color: var(--danger);
  border-left: 3px solid var(--danger);
}
.alert-info {
  background: var(--primary-light);
  color: var(--primary);
  border-left: 3px solid var(--primary);
}
.alert-success {
  background: #f0fdf4;
  color: var(--success);
  border-left: 3px solid var(--success);
}

/* =============================================
   Component — Hero (Homepage)
   ============================================= */
.hero-section {
  background: var(--primary-light);
  color: var(--text-primary);
  padding: 64px 0 52px;
	text-align: center;
  border-bottom: 1px solid var(--border);
}
.hero-section h1 {
  font-size: 38px;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -.5px;
  color: var(--text-primary);
}
.hero-section p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 520px;
  margin: 0 auto;
}

/* =============================================
   Component — Feature Cards
   ============================================= */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin: 40px 0;
}
.feature-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.feature-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.feature-card .icon {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--primary);
}
.feature-card h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* =============================================
   Component — Section Title
   ============================================= */
.section-title {
  font-size: 26px;
  font-weight: 700;
		text-align: center;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.section-sub {
  font-size: 15px;
		text-align: center;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

/* =============================================
   Component — Tag / Badge
   ============================================= */
.badge-primary {
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 20px;
  padding: 2px 10px;
		font-size: 12px;
  font-weight: 500;
}

/* =============================================
   Component — Footer
   ============================================= */
.footer {
  background: #1f2937;
  color: #9ca3af;
  padding: 32px 0;
		text-align: center;
  font-size: 13px;
}
.footer a {
  color: #9ca3af;
  text-decoration: none;
  margin: 0 8px;
}
.footer a:hover { color: #d1d5db; text-decoration: underline; }
.footer strong { color: #e5e7eb; }

/* =============================================
   Component — Bottom Status Bar
   ============================================= */
#footer-message {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: 52px;
  background: var(--bg-white);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  box-shadow: 0 -2px 8px rgba(0,0,0,.06);
  font-size: 14px;
  color: var(--text-secondary);
}
#footer-message a.charge {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background var(--transition);
}
#footer-message a.charge:hover { background: var(--primary-dark); text-decoration: none; }

/* =============================================
   Component — Video List
   ============================================= */
#video-tbody tr {
  border-bottom: 1px solid var(--border);
  transition: background var(--transition);
}
#video-tbody tr:hover { background: var(--primary-light); }
#video-tbody img {
  max-width: 100px;
  max-height: 64px;
  border-radius: 4px;
  object-fit: cover;
}
.video-title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

/* =============================================
   Component — Dropdowns
   ============================================= */
.dropdown-menu {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 4px 0;
}
.dropdown-menu > li > a {
  padding: 8px 16px;
  color: var(--text-primary);
  font-size: 13px;
}
.dropdown-menu > li > a:hover { background: var(--primary-light); color: var(--primary); }

/* =============================================
   Page-Specific — Video Upload Popup
   ============================================= */
.uploadPopup .content,
.sharePopup .content {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.upload_row { margin: 12px 0; }
.file {
  display: block;
  height: 6px;
  background: linear-gradient(90deg, var(--primary) var(--pct, 0%), var(--border) 0%);
  border-radius: 3px;
  transition: background-position .1s;
}

/* =============================================
   Page-Specific — Charge / Pricing
   ============================================= */
.price-box {
  background: var(--bg-white);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 16px;
  text-align: center;
  cursor: pointer;
  margin-bottom: 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.price-box:hover, .price-box.selected {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}
.price-tag {
  display: block;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
  margin-bottom: 4px;
}
.price-tag-sub {
  font-size: 12px;
  color: var(--text-secondary);
  display: block;
}
.order-box {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
	margin-bottom: 20px;
}
.order-box li { margin-bottom: 6px; color: var(--text-secondary); }

/* =============================================
   Page-Specific — Analysis / Chart
   ============================================= */
canvas { max-width: 100%; }

/* =============================================
   Utility
   ============================================= */
.text-muted { color: var(--text-muted) !important; }
.text-primary-color { color: var(--primary); }
.bg-light { background: var(--bg-base); }
.section-divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}
.glyphicon { color: var(--primary); padding-right: 4px; }
.glyphicon-ok { color: var(--success); }
.glyphicon-remove { color: var(--danger); }