/* 모모의 책장 디자인 시스템 v1.0 */
/* MOMOAI Web - Design System Implementation */

/* ============================================
   1. CSS Variables (Design Tokens)
   ============================================ */
:root {
  /* Primary Navy Colors */
  --navy: #1A2744;
  --navy2: #1E3A5F;
  --navy-dark: #0F172A;

  /* Accent Colors */
  --blue: #3B82F6;
  --purple: #8B5CF6;
  --green: #10B981;
  --amber: #F59E0B;
  --red: #EF4444;
  --teal: #14B8A6;
  --rose: #F43F5E;

  /* Background & Surface */
  --bg: #F0F2F5;
  --card: #FFFFFF;
  --light: #F8FAFC;

  /* Text Colors */
  --text: #1E293B;
  --text2: #475569;
  --text3: #94A3B8;

  /* Borders & Lines */
  --border: #E2E8F0;

  /* Grade Colors - Excellent */
  --grade-excellent-text: #059669;
  --grade-excellent-bg: #ECFDF5;

  /* Grade Colors - Good */
  --grade-good-text: #2563EB;
  --grade-good-bg: #EFF6FF;

  /* Grade Colors - Average */
  --grade-average-text: #D97706;
  --grade-average-bg: #FFFBEB;

  /* Grade Colors - Warning */
  --grade-warning-text: #DC2626;
  --grade-warning-bg: #FEF2F2;

  /* Spacing & Layout */
  --radius-card: 14px;
  --radius-button: 10px;
  --radius-badge: 20px;
  --shadow: 0 2px 8px rgba(26, 39, 68, 0.06);
  --shadow-hover: 0 4px 16px rgba(26, 39, 68, 0.12);
  --shadow-header: 0 4px 20px rgba(15, 23, 42, 0.25);

  /* Container */
  --container-max: 1280px;
}

/* ============================================
   2. Base Styles & Typography
   ============================================ */
* {
  transition: all 0.2s ease;
}

body {
  font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* Typography Scale */
.text-header {
  font-size: 20px;
  font-weight: 800;
  color: var(--text);
}

.text-section {
  font-size: 17px;
  font-weight: 800;
  color: var(--text);
}

.text-card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.text-body {
  font-size: 14px;
  font-weight: 400;
  color: var(--text);
}

.text-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--text3);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.text-number {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
}

/* ============================================
   3. Header with Navy Gradient
   ============================================ */
.header-navy {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy2) 100%);
  box-shadow: var(--shadow-header);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-navbar {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy2) 100%);
  box-shadow: var(--shadow-header);
}

/* Sidebar Navy Gradient */
.sidebar-navy {
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy2) 100%);
}

/* Sidebar Menu Active States */
.sidebar-link.active {
  background-color: rgba(255, 255, 255, 0.2) !important;
  color: var(--navy) !important;
  font-weight: 700 !important;
  border-left-color: #60A5FA !important;
}

.sidebar-link-sub.active,
.sidebar-link-sub[class*="text-"][class*="-600"] {
  background-color: rgba(255, 255, 255, 0.15);
  color: var(--navy) !important;
  font-weight: 600;
  padding-left: 1rem;
  padding-right: 1rem;
  border-radius: 0.5rem;
}

/* ============================================
   4. Cards & Containers
   ============================================ */
.card-momo {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.card-momo-sm {
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 16px;
  box-shadow: var(--shadow);
}

.card-bordered {
  border: 1.5px solid var(--border);
}

.card-selected {
  border: 2px solid var(--blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ============================================
   5. Buttons
   ============================================ */
.btn-primary {
  background: var(--blue);
  color: white;
  border-radius: var(--radius-button);
  padding: 10px 20px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background: #2563EB;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-outline {
  background: white;
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-button);
  padding: 10px 20px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-outline:hover {
  border-color: var(--blue);
  color: var(--blue);
  background: rgba(59, 130, 246, 0.05);
}

.btn-danger {
  background: var(--grade-warning-bg);
  color: var(--red);
  border: 1px solid #FCA5A5;
  border-radius: var(--radius-button);
  padding: 10px 20px;
  font-weight: 600;
  cursor: pointer;
}

.btn-danger:hover {
  background: #FEE2E2;
}

/* ============================================
   6. Badges & Labels
   ============================================ */
.badge-momo {
  padding: 3px 10px;
  border-radius: var(--radius-badge);
  font-size: 11px;
  font-weight: 700;
  display: inline-block;
}

.badge-blue {
  background: rgba(59, 130, 246, 0.15);
  color: var(--blue);
}

.badge-green {
  background: var(--grade-excellent-bg);
  color: var(--grade-excellent-text);
}

.badge-amber {
  background: var(--grade-average-bg);
  color: var(--grade-average-text);
}

.badge-red {
  background: var(--grade-warning-bg);
  color: var(--grade-warning-text);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.15);
  color: var(--purple);
}

/* ============================================
   7. Form Elements
   ============================================ */
.input-momo {
  padding: 9px 14px;
  border-radius: var(--radius-button);
  border: 1.5px solid var(--border);
  font-size: 14px;
  background: white;
  color: var(--text);
  transition: all 0.2s ease;
}

.input-momo:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.select-momo {
  padding: 9px 14px;
  border-radius: var(--radius-button);
  border: 1.5px solid var(--border);
  font-size: 14px;
  background: white;
  color: var(--text);
  cursor: pointer;
}

.select-momo:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* ============================================
   8. Grade Badges (A+ through F)
   ============================================ */
.grade-a {
  background: var(--grade-excellent-bg);
  color: var(--grade-excellent-text);
}

.grade-b {
  background: var(--grade-good-bg);
  color: var(--grade-good-text);
}

.grade-c {
  background: var(--grade-average-bg);
  color: var(--grade-average-text);
}

.grade-d {
  background: #FFF7ED;
  color: #EA580C;
}

.grade-e,
.grade-f {
  background: var(--grade-warning-bg);
  color: var(--grade-warning-text);
}

/* ============================================
   9. Status Colors
   ============================================ */
.status-excellent {
  color: var(--grade-excellent-text);
}

.status-good {
  color: var(--grade-good-text);
}

.status-average {
  color: var(--grade-average-text);
}

.status-warning {
  color: var(--grade-warning-text);
}

.bg-excellent {
  background: var(--grade-excellent-bg);
}

.bg-good {
  background: var(--grade-good-bg);
}

.bg-average {
  background: var(--grade-average-bg);
}

.bg-warning {
  background: var(--grade-warning-bg);
}

/* ============================================
   10. Tab Navigation (Rounded)
   ============================================ */
.tab-momo {
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-button);
  padding: 8px 16px;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.tab-momo:hover {
  background: rgba(255, 255, 255, 0.15);
  color: white;
}

.tab-momo-active {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* ============================================
   11. Tables
   ============================================ */
.table-momo thead {
  background: var(--light);
}

.table-momo th {
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table-momo td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
}

.table-momo tr:hover {
  background: var(--light);
}

/* ============================================
   12. Charts (Chart.js Support)
   ============================================ */
.chart-container {
  position: relative;
  background: var(--card);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow);
}

/* ============================================
   13. Custom Scrollbar
   ============================================ */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--light);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text3);
}

/* ============================================
   14. Utilities
   ============================================ */
.text-navy {
  color: var(--navy);
}

.text-blue {
  color: var(--blue);
}

.text-purple {
  color: var(--purple);
}

.text-green {
  color: var(--green);
}

.text-amber {
  color: var(--amber);
}

.text-red {
  color: var(--red);
}

.bg-navy {
  background: var(--navy);
}

.bg-blue {
  background: var(--blue);
}

.bg-light {
  background: var(--light);
}

.border-momo {
  border: 1px solid var(--border);
}

.rounded-momo {
  border-radius: var(--radius-card);
}

.rounded-button {
  border-radius: var(--radius-button);
}

.shadow-momo {
  box-shadow: var(--shadow);
}

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

/* ============================================
   15. Animations
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeIn 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-slide-down {
  animation: slideDown 0.3s ease-out;
}

/* ============================================
   16. Print Optimization
   ============================================ */
@media print {
  body {
    margin: 0;
    padding: 0;
    background: white;
  }

  .no-print {
    display: none !important;
  }

  .card-momo {
    box-shadow: none;
    border: 1px solid var(--border);
  }

  .header-navy,
  .sidebar-navy {
    background: white !important;
    color: var(--text) !important;
    box-shadow: none;
  }
}

/* ============================================
   17. Responsive Design
   ============================================ */
@media (max-width: 768px) {
  .card-momo {
    padding: 16px;
  }

  .text-header {
    font-size: 18px;
  }

  .text-section {
    font-size: 16px;
  }
}

/* ============================================
   18. Code Blocks
   ============================================ */
code {
  background-color: var(--light);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 0.9em;
  color: var(--purple);
}

pre {
  background: var(--light);
  border-radius: var(--radius-button);
  padding: 16px;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

/* ============================================
   19. Loading States
   ============================================ */
.loading-spinner {
  border: 3px solid var(--border);
  border-top: 3px solid var(--blue);
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ============================================
   20. Focus States (Accessibility)
   ============================================ */
*:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}

/* ============================================
   21. Timeline (for ACE evaluation comments)
   ============================================ */
.timeline {
  border-left: 3px solid var(--blue);
  margin-left: 8px;
  padding-left: 20px;
}

.timeline-item {
  position: relative;
  padding-bottom: 18px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -26px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--blue);
  border: 2px solid #fff;
  box-shadow: var(--shadow);
}

.timeline-qtr {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.timeline-year {
  font-size: 11px;
  color: var(--text3);
  margin-left: 6px;
}

.timeline-comment {
  font-size: 13px;
  color: var(--text2);
  margin-top: 4px;
  line-height: 1.7;
}

.timeline-scores {
  font-size: 11px;
  color: var(--text3);
  margin-top: 4px;
}

/* ============================================
   22. ACE Evaluation Grade Buttons
   ============================================ */
.grade-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid #f5f5f5;
}

.grade-label {
  flex: 1;
  font-size: 13px;
  color: var(--text2);
}

.grade-btns {
  display: flex;
  gap: 4px;
}

.grade-btn {
  width: 48px;
  height: 36px;
  border-radius: 8px;
  border: none;
  font-size: 12px;
  font-weight: 700;
  background: var(--light);
  color: var(--text3);
  transition: all 0.15s;
  cursor: pointer;
}

.grade-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.grade-btn.active {
  color: #fff !important;
  transform: scale(1.08);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
  font-weight: 900;
}

/* 특 - 초록색 */
button.grade-btn.g-top.active,
button.grade-btn.active.g-top {
  background: #10B981 !important;
  border: 2px solid #059669 !important;
}

/* 상 - 파란색 */
button.grade-btn.g-high.active,
button.grade-btn.active.g-high {
  background: #3B82F6 !important;
  border: 2px solid #2563EB !important;
}

/* 중 - 오렌지색 */
button.grade-btn.g-mid.active,
button.grade-btn.active.g-mid {
  background: #F59E0B !important;
  border: 2px solid #D97706 !important;
}

/* 하 - 주황색 */
button.grade-btn.g-low.active,
button.grade-btn.active.g-low {
  background: #F97316 !important;
  border: 2px solid #EA580C !important;
}

/* 저 - 빨간색 */
button.grade-btn.g-bottom.active,
button.grade-btn.active.g-bottom {
  background: #EF4444 !important;
  border: 2px solid #DC2626 !important;
}

/* ============================================
   23. Student Card Hover Effects (ACE Evaluation)
   ============================================ */
.student-card-selectable {
  cursor: pointer;
  transition: all 0.25s ease;
  border: 2px solid transparent !important;
}

.card-momo-sm.student-card-selectable:hover {
  transform: translateY(-3px) !important;
  box-shadow: 0 8px 20px rgba(0,0,0,0.15) !important;
  border: 2px solid #64748B !important;
  background: #F1F5F9 !important;
}

.card-momo-sm.student-card-selectable:hover .font-bold {
  color: #1E293B !important;
  font-weight: 900 !important;
}

.card-momo-sm.student-card-selectable:hover .text-gray-500 {
  color: #475569 !important;
}

.card-momo-sm.student-card-selectable.selected {
  border: 2px solid #10B981 !important;
  background: rgba(16, 185, 129, 0.08) !important;
}

.card-momo-sm.student-card-selectable.selected .font-bold {
  color: #10B981 !important;
}