/* Japanese Exam Portal Styles */

:root {
  --primary: #dc2626;
  --primary-hover: #b91c1c;
  --primary-light: #fef2f2;
  --secondary: #0f172a;
  --accent: #2563eb;
  --success: #16a34a;
  --success-bg: #f0fdf4;
  --success-border: #86efac;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --danger-border: #fca5a5;
  --surface: #ffffff;
  --bg: #f8fafc;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --border-focus: #cbd5e1;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.08), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --radius: 12px;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Plus Jakarta Sans', 'Noto Sans Sinhala', 'Noto Sans JP', sans-serif;
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.6;
}

button, input, select {
  font-family: inherit;
  touch-action: manipulation;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
.header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: var(--shadow-sm);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  gap: 16px;
  flex-wrap: wrap;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.torii-badge {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #dc2626, #991b1b);
  color: #fff;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(220, 38, 38, 0.3);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--secondary);
  letter-spacing: -0.02em;
}

.brand-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mode-selector {
  display: flex;
  background: #f1f5f9;
  padding: 4px;
  border-radius: 12px;
  border: 1px solid var(--border);
}

.mode-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  transition: all 0.2s ease;
  text-align: left;
}

.mode-btn small {
  font-size: 0.7rem;
  font-weight: normal;
  display: block;
}

.mode-btn.active {
  background: #ffffff;
  color: var(--secondary);
  box-shadow: 0 2px 4px rgba(0,0,0,0.06);
}

.mode-btn:hover:not(.active) {
  color: var(--secondary);
}

.timer-box {
  background: #fef2f2;
  border: 1.5px solid #fca5a5;
  color: #991b1b;
  padding: 8px 14px;
  border-radius: 10px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 1rem;
}

.timer-time {
  font-variant-numeric: tabular-nums;
  letter-spacing: 1px;
}

/* Paper Bar */
.paper-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  margin-bottom: 20px;
  background: #ffffff;
  padding: 16px 20px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
  gap: 12px;
}

.paper-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.paper-dropdown {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--secondary);
  border: 1.5px solid var(--border);
  padding: 8px 14px;
  border-radius: 8px;
  background: #ffffff;
  cursor: pointer;
  outline: none;
  transition: border-color 0.2s;
}

.paper-dropdown:focus {
  border-color: var(--primary);
}

.paper-bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

/* Section Nav Footer */
.section-nav-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 24px;
  margin-bottom: 30px;
  padding: 16px 20px;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  gap: 12px;
  flex-wrap: wrap;
}

.section-nav-warning {
  color: #dc2626;
  font-weight: 700;
  font-size: 0.9rem;
  background: #fef2f2;
  border: 1px solid #fecaca;
  padding: 8px 14px;
  border-radius: 8px;
  animation: fadeIn 0.2s ease;
}

.score-pill {
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e40af;
  padding: 8px 16px;
  border-radius: 30px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 6px;
}

.score-pill-val {
  font-size: 1.15rem;
  font-weight: 800;
}

/* Section Navigation Tabs */
.section-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  overflow-x: auto;
  padding-bottom: 6px;
}

.tab-btn {
  white-space: nowrap;
  padding: 10px 18px;
  border: 1px solid var(--border);
  background: #ffffff;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tab-btn:hover {
  border-color: #cbd5e1;
  color: var(--secondary);
}

.tab-btn.active {
  background: var(--secondary);
  color: #ffffff;
  border-color: var(--secondary);
  box-shadow: 0 4px 8px rgba(15, 23, 42, 0.2);
}

.tab-count {
  background: rgba(0,0,0,0.06);
  padding: 2px 7px;
  border-radius: 12px;
  font-size: 0.75rem;
}

.tab-btn.active .tab-count {
  background: rgba(255,255,255,0.25);
  color: #fff;
}

/* Question Section Header */
.section-intro-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  padding: 16px 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
}

.section-intro-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--secondary);
}

.section-intro-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Question Card */
.question-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.question-card:hover {
  box-shadow: var(--shadow);
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
  gap: 12px;
}

.q-badge {
  background: #f1f5f9;
  color: var(--secondary);
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.8rem;
  font-weight: 700;
}

.q-marks-pill {
  color: #0284c7;
  background: #f0f9ff;
  border: 1px solid #bae6fd;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 6px;
}

.q-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--secondary);
  white-space: pre-line;
  line-height: 1.6;
}

.q-subtext {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 6px;
  margin-bottom: 12px;
}

/* Question Image */
.q-image-box {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 18px;
  max-height: 280px;
  overflow: hidden;
}

.q-image-box img {
  max-height: 240px;
  max-width: 100%;
  object-fit: contain;
  border-radius: 8px;
  transition: transform 0.3s;
}

.q-image-box img:hover {
  transform: scale(1.03);
}

/* Options Grid */
.options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin-top: 14px;
}

.options-grid.has-image-options {
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

@media (min-width: 640px) {
  .options-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.option-btn {
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  text-align: left;
  cursor: pointer;
  transition: all 0.15s ease-in-out;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--text-main);
  position: relative;
  user-select: none;
}

.option-btn:active:not(.locked) {
  transform: scale(0.98);
}

.option-btn.has-image {
  flex-direction: column;
  align-items: stretch;
  padding: 12px;
}

.option-content-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  gap: 8px;
}

.opt-img-box {
  width: 100%;
  height: 120px;
  background: #f8fafc;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--border);
}

.opt-img-box img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.opt-text {
  text-align: center;
  width: 100%;
}

.option-btn:hover:not(.locked) {
  border-color: #94a3b8;
  background-color: #f8fafc;
}

/* Selected in Exam Mode */
.option-btn.selected {
  border-color: var(--accent);
  background-color: #eff6ff;
  color: #1d4ed8;
  box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.2);
}

/* Correct Answer (Practice Mode or Review) */
.option-btn.correct {
  background-color: var(--success-bg) !important;
  border-color: var(--success) !important;
  color: #14532d !important;
  box-shadow: 0 0 0 2px rgba(22, 163, 74, 0.25) !important;
}

/* Wrong Answer (Practice Mode or Review) */
.option-btn.wrong {
  background-color: var(--danger-bg) !important;
  border-color: var(--danger) !important;
  color: #7f1d1d !important;
}

.option-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

/* Explanation Box */
.explanation-box {
  margin-top: 16px;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
  line-height: 1.6;
  animation: fadeIn 0.3s ease;
}

.explanation-box.correct-msg {
  background-color: var(--success-bg);
  border: 1px solid var(--success-border);
  color: #14532d;
}

.explanation-box.wrong-msg {
  background-color: var(--danger-bg);
  border: 1px solid var(--danger-border);
  color: #7f1d1d;
}

/* Bottom Bar */
.bottom-bar {
  position: sticky;
  bottom: 0;
  background: #ffffff;
  border-top: 1px solid var(--border);
  padding: 14px 20px;
  box-shadow: 0 -4px 12px rgba(0,0,0,0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 30px;
  border-radius: var(--radius) var(--radius) 0 0;
  z-index: 30;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.15s ease;
  user-select: none;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.3);
}

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

.btn-secondary {
  background: #f1f5f9;
  color: var(--secondary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: #e2e8f0;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.85rem;
  border-radius: 8px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  backdrop-filter: blur(4px);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
}

.modal-card {
  background: #ffffff;
  border-radius: 20px;
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 32px 24px;
  box-shadow: var(--shadow-lg);
  animation: scaleUp 0.25s ease;
}

.result-header {
  text-align: center;
  margin-bottom: 24px;
}

.result-icon {
  font-size: 3rem;
  margin-bottom: 8px;
}

.score-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 24px;
}

.score-circle {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.score-big {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--secondary);
  line-height: 1;
}

.score-max {
  font-size: 1.4rem;
  color: var(--text-muted);
  font-weight: 700;
}

.result-badge-container {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 10px;
}

.badge-pass {
  background: #22c55e;
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 0.5px;
}

.badge-fail {
  background: #ef4444;
  color: #fff;
  font-weight: 800;
  font-size: 0.85rem;
  padding: 4px 12px;
  border-radius: 20px;
}

.percentage-val {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.breakdown-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--secondary);
  margin-bottom: 12px;
}

.section-breakdown {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.breakdown-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  background: #f8fafc;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  font-weight: 600;
}

.breakdown-score {
  font-weight: 800;
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Flex controls in header */
.flex-controls {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Hero Section */
.hero-card {
  background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
  color: #ffffff;
  border-radius: 20px;
  padding: 36px 30px;
  margin-top: 24px;
  margin-bottom: 32px;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.25);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.08);
}

.hero-card::after {
  content: '日本語';
  position: absolute;
  right: -20px;
  bottom: -30px;
  font-size: 8rem;
  font-weight: 900;
  color: rgba(255, 255, 255, 0.04);
  pointer-events: none;
  font-family: 'Noto Sans JP', sans-serif;
}

.hero-tag {
  background: rgba(220, 38, 38, 0.25);
  color: #f87171;
  border: 1px solid rgba(248, 113, 113, 0.3);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 12px;
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 800;
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: 1rem;
  color: #cbd5e1;
  max-width: 650px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.hero-features {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.feat-pill {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #f1f5f9;
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* Paper Selection Header */
.section-title-wrap {
  margin-bottom: 20px;
}

.section-heading {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--secondary);
}

.section-subheading {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Paper Cards Grid */
.paper-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 22px;
  margin-bottom: 40px;
}

.paper-card {
  background: #ffffff;
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.25s ease;
}

.paper-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #cbd5e1;
}

.paper-card-top {
  margin-bottom: 18px;
}

.paper-card-badge {
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 10px;
}

.paper-card-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--secondary);
  margin-bottom: 8px;
}

.paper-card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
}

.paper-meta-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.stat-chip {
  background: #f1f5f9;
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
}

.paper-sections-list {
  background: #f8fafc;
  border-radius: 10px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  margin-bottom: 20px;
}

.paper-sections-list h4 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.sections-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sec-chip {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--secondary);
  background: #ffffff;
  border: 1px solid var(--border);
  padding: 2px 8px;
  border-radius: 4px;
}

.paper-card-actions {
  display: flex;
  gap: 10px;
}

.paper-card-actions .btn {
  flex: 1;
  padding: 10px 14px;
  font-size: 0.88rem;
}

/* Form & Inputs */
.small-modal {
  max-width: 440px !important;
}

.admin-modal-card {
  max-width: 980px !important;
  width: 95% !important;
}

.entry-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--secondary);
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1.5px solid var(--border);
  font-size: 16px; /* 16px prevents iOS Safari from automatically zooming into the input */
  outline: none;
  transition: border-color 0.2s;
  background: #ffffff;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Admin Top Bar */
.admin-top-bar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 16px;
}

.admin-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--secondary);
}

.admin-subtitle {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Admin Stats Cards */
.admin-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.stat-card {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--secondary);
}

.stat-text {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.stat-card.stat-pass .stat-num {
  color: var(--success);
}

.stat-card.stat-fail .stat-num {
  color: var(--danger);
}

/* Filter Bar */
.admin-filter-bar {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.search-box {
  flex: 2;
  min-width: 200px;
}

.filter-dropdown {
  flex: 1;
  min-width: 140px;
  cursor: pointer;
}

/* Submissions Table */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 12px;
  margin-bottom: 20px;
  max-height: 400px;
  overflow-y: auto;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.admin-table th {
  background: #f1f5f9;
  color: var(--secondary);
  font-weight: 700;
  padding: 12px 14px;
  border-bottom: 1.5px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.admin-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
}

.admin-table tr:hover td {
  background: #f8fafc;
}

.badge-sub-pass {
  background: #dcfce7;
  color: #15803d;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
}

.badge-sub-fail {
  background: #fee2e2;
  color: #b91c1c;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
}

.badge-sub-progress {
  background: #fef3c7;
  color: #b45309;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
  animation: pulseProgress 2s infinite ease-in-out;
}

.badge-sub-practice {
  background: #e0f2fe;
  color: #0369a1;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 3px 8px;
  border-radius: 12px;
}

@keyframes pulseProgress {
  0% { opacity: 1; }
  50% { opacity: 0.6; }
  100% { opacity: 1; }
}

/* Webhook panel */
.webhook-panel {
  background: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 18px;
}

.webhook-header {
  display: flex;
  justify-content: space-between;
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--secondary);
}

.webhook-body {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--border);
}

.webhook-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.webhook-input-group {
  display: flex;
  gap: 8px;
}

.admin-footer-bar {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--border);
  padding-top: 14px;
}

.btn-danger {
  background: #ef4444;
  color: #ffffff;
}

.btn-danger:hover {
  background: #dc2626;
}

/* Footer */
.footer {
  margin-top: 40px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleUp {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

/* ========================================================
   MOBILE & TABLET RESPONSIVE OPTIMIZATIONS
   ======================================================== */

@media (max-width: 768px) {
  .header-container {
    padding: 10px 14px;
    gap: 10px;
  }
  
  .logo-area {
    gap: 8px;
  }
  
  .torii-badge {
    width: 38px;
    height: 38px;
    font-size: 19px;
    border-radius: 8px;
  }
  
  .brand-title {
    font-size: 1.05rem;
  }
  
  .brand-subtitle {
    display: none; /* Hide subtitle to keep header sleek */
  }
  
  .header-controls {
    gap: 8px;
    width: 100%;
    justify-content: space-between;
  }
  
  #navHomeBtn, #navAdminBtn {
    padding: 8px 12px;
    font-size: 0.85rem;
    min-height: 38px;
  }
  
  .flex-controls {
    width: 100%;
    justify-content: space-between;
    gap: 8px;
  }
  
  .mode-selector {
    flex: 1;
    display: flex;
  }
  
  .mode-btn {
    flex: 1;
    padding: 8px 6px;
    font-size: 0.8rem;
    justify-content: center;
    text-align: center;
    min-height: 40px;
  }
  
  .mode-btn small {
    display: none; /* Hide subtext on mobile */
  }
  
  .timer-box {
    padding: 6px 10px;
    font-size: 0.9rem;
    min-height: 40px;
    display: flex;
    align-items: center;
  }
}

@media (max-width: 640px) {
  .container {
    padding: 0 12px;
  }
  
  /* Hero Banner */
  .hero-card {
    padding: 20px 16px;
    margin-top: 14px;
    margin-bottom: 20px;
    border-radius: 14px;
  }
  
  .hero-title {
    font-size: 1.35rem;
  }
  
  .hero-desc {
    font-size: 0.88rem;
    line-height: 1.5;
    margin-bottom: 14px;
  }
  
  .hero-features {
    gap: 6px;
  }
  
  .feat-pill {
    padding: 4px 10px;
    font-size: 0.75rem;
  }
  
  /* Paper Cards */
  .paper-cards-grid {
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 30px;
  }
  
  .paper-card {
    padding: 18px 14px;
    border-radius: 14px;
  }
  
  .paper-card-actions {
    flex-direction: column;
    gap: 10px;
  }
  
  .paper-card-actions .btn {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    min-height: 50px;
  }
  
  /* Paper Bar */
  .paper-bar {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 14px;
    gap: 10px;
    margin-top: 14px;
    margin-bottom: 14px;
    border-radius: 12px;
  }
  
  .paper-title {
    font-size: 1.15rem;
  }
  
  .paper-bar-right {
    justify-content: space-between;
    width: 100%;
  }
  
  /* Section Navigation Tabs */
  .section-tabs {
    margin-bottom: 14px;
    padding-bottom: 4px;
    gap: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .section-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .tab-btn {
    padding: 8px 12px;
    font-size: 0.82rem;
    min-height: 40px;
    flex-shrink: 0;
  }
  
  /* Section Intro */
  .section-intro-card {
    padding: 12px 14px;
    margin-bottom: 14px;
    border-radius: 10px;
  }
  
  .section-intro-title {
    font-size: 1.05rem;
  }
  
  .section-intro-desc {
    font-size: 0.82rem;
  }
  
  /* Question Card */
  .question-card {
    padding: 16px 14px;
    border-radius: 14px;
    margin-bottom: 16px;
  }
  
  .q-title {
    font-size: 1.05rem;
    line-height: 1.6;
  }
  
  .q-image-box {
    max-height: 190px;
    padding: 8px;
    margin-bottom: 12px;
  }
  
  .q-image-box img {
    max-height: 170px;
  }
  
  /* Option Buttons - Large Touch Targets */
  .option-btn {
    padding: 14px 14px;
    font-size: 0.98rem;
    min-height: 52px;
    border-radius: 10px;
    width: 100%;
  }
  
  .options-grid.has-image-options {
    grid-template-columns: 1fr 1fr !important;
    gap: 8px;
  }
  
  .options-grid.has-image-options .option-btn.has-image {
    padding: 8px;
    min-height: 125px;
  }
  
  .options-grid.has-image-options .opt-img-box {
    height: 85px;
  }
  
  .options-grid.has-image-options .opt-text {
    font-size: 0.82rem;
  }
  
  /* Section Nav Footer (Next / Prev Side-by-Side for Thumbs) */
  .section-nav-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    padding: 12px;
    gap: 10px;
    margin-top: 16px;
    margin-bottom: 16px;
  }
  
  .section-nav-warning {
    grid-column: 1 / -1;
    font-size: 0.82rem;
    padding: 8px 10px;
    text-align: center;
  }
  
  .section-nav-footer .btn {
    width: 100%;
    padding: 14px 10px;
    font-size: 0.92rem;
    min-height: 50px;
    white-space: normal;
    text-align: center;
  }
  
  /* Bottom Sticky Bar */
  .bottom-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    padding: 12px 14px;
    padding-bottom: max(14px, env(safe-area-inset-bottom));
  }
  
  .bottom-bar .btn {
    width: 100%;
    padding: 14px 16px;
    font-size: 1rem;
    min-height: 50px;
  }
  
  .exam-status-info {
    text-align: center;
    font-size: 0.85rem;
  }
  
  /* Modals */
  .modal-overlay {
    padding: 10px;
  }
  
  .modal-card {
    padding: 22px 16px;
    border-radius: 16px;
    max-height: 92vh;
  }
  
  .score-big {
    font-size: 2.8rem;
  }
  
  .modal-actions {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }
  
  .modal-actions .btn {
    width: 100%;
    padding: 14px 16px;
    font-size: 0.98rem;
    min-height: 48px;
  }
  
  /* Admin Modal */
  .admin-modal-card {
    padding: 16px 12px;
    width: 100% !important;
  }
  
  .admin-title {
    font-size: 1.15rem;
  }
  
  .admin-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  
  .stat-card {
    padding: 10px;
  }
  
  .stat-num {
    font-size: 1.4rem;
  }
  
  .admin-filter-bar {
    flex-direction: column;
    gap: 8px;
  }
  
  .admin-filter-bar .search-box,
  .admin-filter-bar .filter-dropdown,
  .admin-filter-bar .btn {
    width: 100%;
    min-height: 44px;
  }
}