/* ==========================================================================
   SRU Curriculum Portal - global.css
   ========================================================================== */

/* Design Tokens & CSS Variables */
:root {
  --color-bg: #f8fafc;
  --color-surface: #ffffff;
  --color-text-primary: #0f172a;
  --color-text-secondary: #475569;
  --color-text-muted: #94a3b8;
  
  --color-accent-blue: #0284c7;
  --color-accent-indigo: #4f46e5;
  --color-card-border: rgba(15, 23, 42, 0.08);
  
  --gradient-accent: linear-gradient(135deg, #0284c7 0%, #4f46e5 100%);
  --gradient-title: linear-gradient(135deg, #0f172a 0%, #1e40af 100%);
  
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.03);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.03), 0 10px 15px -3px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.06), 0 10px 10px -5px rgba(15, 23, 42, 0.03);
  --shadow-modal: 0 25px 50px -12px rgba(15, 23, 42, 0.15);
  
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  
  --font-display: 'Noto Sans Thai', 'Inter', sans-serif;
  --font-body: 'Noto Sans Thai', 'Inter', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow-x: hidden;
  position: relative;
}

/* Ambient background glows (Mesh Gradient Blobs) */
.blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.12;
  pointer-events: none;
  z-index: -1;
  animation: float-around 28s infinite alternate ease-in-out;
}

.blob-1 {
  background: radial-gradient(circle, rgba(2, 132, 199, 0.45) 0%, transparent 70%);
  top: -5%;
  left: -5%;
  width: 500px;
  height: 500px;
}

.blob-2 {
  background: radial-gradient(circle, rgba(79, 70, 229, 0.4) 0%, transparent 70%);
  bottom: -10%;
  right: -5%;
  width: 600px;
  height: 600px;
  animation-delay: -10s;
}

.blob-1 {
  animation: float-blob-1 25s infinite alternate ease-in-out;
}

.blob-2 {
  animation: float-blob-2 30s infinite alternate ease-in-out;
}

@keyframes float-blob-1 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(120px, -80px) scale(1.15) rotate(45deg); }
  100% { transform: translate(-60px, 40px) scale(0.9) rotate(-45deg); }
}

@keyframes float-blob-2 {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-100px, 90px) scale(1.15) rotate(-60deg); }
  100% { transform: translate(80px, -50px) scale(0.9) rotate(60deg); }
}

/* Base Container */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 6rem;
  width: 100%;
  flex-grow: 1;
  position: relative;
  z-index: 10;
}



/* Footer */
footer {
  text-align: center;
  padding: 3rem 1.5rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  border-top: 1px solid var(--color-card-border);
  background-color: #ffffff;
  position: relative;
  z-index: 10;
}



/* Single Page Section View Routing */
.view-section {
  display: none;
}

.view-section.active {
  display: block;
  animation: fadeIn 0.4s ease-out forwards;
}

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

/* Glassmorphic Login Form */
.login-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 450px;
  width: 100%;
}

.login-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
  box-shadow: var(--shadow-lg);
  text-align: center;
}

.login-card h2 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.login-form {
  text-align: left;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 0.5rem;
}

.form-input {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-family: var(--font-body);
  border: 1px solid rgba(15, 23, 42, 0.15);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.6);
  color: var(--color-text-primary);
  transition: var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
  background: #ffffff;
}

.login-error-msg {
  color: #ef4444;
  font-size: 0.85rem;
  margin-bottom: 1rem;
  display: none;
  text-align: center;
  font-weight: 500;
}

.btn-submit {
  width: 100%;
  background: var(--gradient-accent);
  color: #ffffff;
  border: none;
  padding: 0.85rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.2);
  margin-top: 0.5rem;
}

.btn-submit:hover {
  opacity: 0.95;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(2, 132, 199, 0.3);
}

/* Admin Dashboard Styles */
.admin-wrapper {
  width: 100%;
}

.admin-card {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
  max-width: 1000px;
  margin: 0 auto;
  transition: var(--transition-normal);
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-card-border);
  padding-bottom: 1.5rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.admin-title-area h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-text-primary);
}

.admin-title-area p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.admin-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.timer-badge {
  background: rgba(245, 158, 11, 0.1);
  color: #d97706;
  border: 1px solid rgba(245, 158, 11, 0.2);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.timer-badge svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.btn-logout {
  background: #ef4444;
  color: #ffffff;
  border: none;
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.2);
}

.btn-logout:hover {
  background: #dc2626;
  box-shadow: 0 6px 16px rgba(239, 68, 68, 0.3);
  transform: translateY(-1px);
}

/* User Management Section */
.admin-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2rem;
  margin-bottom: 1.25rem;
}

.admin-section-header h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.btn-add {
  background: var(--gradient-accent);
  color: #ffffff;
  border: none;
  padding: 0.5rem 1rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.2);
  transition: var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-add:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(2, 132, 199, 0.3);
}

.btn-add svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* User Management Table */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-card-border);
  background: var(--color-surface);
}

.user-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.925rem;
}

.user-table th, .user-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--color-card-border);
}

.user-table th {
  background: rgba(15, 23, 42, 0.02);
  color: var(--color-text-primary);
  font-weight: 600;
}

.user-table tbody tr:last-child td {
  border-bottom: none;
}

.user-table tbody tr:hover {
  background: rgba(15, 23, 42, 0.01);
}

/* Action Buttons */
.action-buttons {
  display: flex;
  gap: 0.5rem;
}

.btn-edit {
  background: rgba(79, 70, 229, 0.1);
  color: var(--color-accent-indigo);
  border: 1px solid rgba(79, 70, 229, 0.2);
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-edit:hover {
  background: var(--color-accent-indigo);
  color: #ffffff;
}

.btn-delete {
  background: rgba(239, 68, 68, 0.1);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 0.35rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

/* Reusable Modal Dialog */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

.modal-box {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow-modal);
  transform: scale(0.92) translateY(-15px);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.active .modal-box {
  transform: scale(1) translateY(0);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.modal-header h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.btn-close {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  line-height: 1;
  transition: var(--transition-fast);
}

.btn-close:hover {
  color: var(--color-text-primary);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.75rem;
}

.btn-cancel {
  background: rgba(15, 23, 42, 0.05);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-card-border);
  padding: 0.6rem 1.25rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-cancel:hover {
  background: rgba(15, 23, 42, 0.08);
}





.user-name-text {
  font-weight: 600;
  color: var(--color-text-primary);
}



/* Portal Hero and Grid Menu Styles */
.portal-hero {
  max-width: 1000px;
  margin: 1.5rem auto 3.5rem;
  width: 100%;
}

.portal-header-row {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1.25rem;
}

.portal-logo {
  width: 52px;
  height: 52px;
  background: var(--gradient-accent);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(2, 132, 199, 0.2);
  flex-shrink: 0;
}

.portal-logo svg {
  width: 26px;
  height: 26px;
  fill: currentColor;
}

.portal-hero h1 {
  font-family: var(--font-display);
  font-size: 2.25rem;
  color: var(--color-text-primary);
  font-weight: 800;
  letter-spacing: -0.5px;
  background: var(--gradient-title);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin: 0;
  line-height: 1.2;
}

/* Grid Menu layout */
.grid-menu {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto 3rem;
}

.menu-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition-normal);
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.menu-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.05) 0%, rgba(79, 70, 229, 0.05) 100%);
  opacity: 0;
  transition: var(--transition-fast);
  z-index: 1;
}

.menu-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(2, 132, 199, 0.2);
}

.menu-card:hover::after {
  opacity: 1;
}

.menu-card > * {
  position: relative;
  z-index: 2;
}

.menu-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  box-shadow: inset 0 2px 4px rgba(255, 255, 255, 0.8);
}

.menu-card-icon svg {
  width: 28px;
  height: 28px;
  fill: currentColor;
}

.menu-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--color-text-primary);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

/* Back Navigation styles */
.back-nav-container {
  max-width: 1000px;
  margin: 0 auto 1.5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition-fast);
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--color-card-border);
  border-radius: 99px;
}

.back-link svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transition: var(--transition-fast);
}

.back-link:hover {
  color: var(--color-accent-blue);
  border-color: rgba(2, 132, 199, 0.2);
  background: #ffffff;
  transform: translateX(-3px);
}

/* Responsive adjustments for Tablets & Large Phones (max-width: 1024px) */
@media (max-width: 1024px) {
  .container {
    padding: 2rem 1.25rem 5rem;
  }
  .admin-card {
    padding: 2rem 1.5rem;
  }
}

/* Responsive adjustments for Mobile & Small Tablets (max-width: 768px) */
@media (max-width: 768px) {
  .container {
    padding: 1.5rem 1rem 4rem;
  }
  .grid-menu {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-bottom: 2rem;
  }
  .menu-card {
    padding: 2rem 1.5rem;
  }
  .portal-hero {
    margin-bottom: 2.5rem;
    margin-top: 1rem;
  }
  .portal-hero h1 {
    font-size: 1.75rem;
  }
  .admin-card {
    padding: 1.5rem 1rem;
    border-radius: var(--radius-md);
  }
  .admin-header {
    padding-bottom: 1rem;
    margin-bottom: 1rem;
  }
  .user-table th, .user-table td {
    padding: 0.85rem 0.75rem;
    font-size: 0.85rem;
  }
  .login-card {
    padding: 2rem 1.5rem;
  }
}

/* Extra small mobile adjustments (max-width: 480px) */
@media (max-width: 480px) {
  .portal-header-row {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    text-align: center;
  }
  .portal-logo {
    width: 46px;
    height: 46px;
  }
  .portal-logo svg {
    width: 22px;
    height: 22px;
  }
  .portal-hero h1 {
    font-size: 1.5rem;
  }
  .back-nav-container {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.75rem !important;
  }
  .back-link {
    justify-content: center;
  }
  .btn-logout {
    width: 100%;
    text-align: center;
    padding: 0.6rem;
  }
  .admin-header {
    flex-direction: column !important;
    align-items: stretch !important;
    text-align: center;
  }
  .admin-controls {
    justify-content: center;
    width: 100%;
  }
  .btn-add {
    width: 100%;
    justify-content: center;
  }
}

/* Drag and Drop Reordering Styles */
.drag-handle {
  cursor: grab;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  user-select: none;
  font-size: 1.25rem;
  padding: 0.5rem;
  transition: var(--transition-fast);
}

.drag-handle:hover {
  color: var(--color-text-primary);
}

.drag-handle:active {
  cursor: grabbing;
}

tr[draggable="true"] {
  transition: transform 0.2s ease, background-color 0.2s ease;
}

tr.dragging {
  opacity: 0.4;
  background-color: rgba(2, 132, 199, 0.05) !important;
}

tr.drag-over {
  background-color: rgba(79, 70, 229, 0.05) !important;
  border-top: 2px solid var(--color-accent-indigo);
}

/* Circular Icon-Only Action Buttons */
.btn-action-round-blue {
  background: rgba(2, 132, 199, 0.1) !important;
  color: var(--color-accent-blue) !important;
  border: 1px solid rgba(2, 132, 199, 0.2) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 36px !important;
  height: 36px !important;
  padding: 0 !important;
  border-radius: 50% !important;
  transition: var(--transition-fast) !important;
  text-decoration: none !important;
}
.btn-action-round-blue:hover {
  background: var(--color-accent-blue) !important;
  color: #ffffff !important;
}

.btn-action-round-indigo {
  background: rgba(79, 70, 229, 0.1) !important;
  color: var(--color-accent-indigo) !important;
  border: 1px solid rgba(79, 70, 229, 0.2) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 32px !important;
  height: 32px !important;
  padding: 0 !important;
  border-radius: 50% !important;
  transition: var(--transition-fast) !important;
  cursor: pointer !important;
  text-decoration: none !important;
}
.btn-action-round-indigo:hover {
  background: var(--color-accent-indigo) !important;
  color: #ffffff !important;
}

.btn-action-round-red {
  background: rgba(239, 68, 68, 0.1) !important;
  color: #ef4444 !important;
  border: 1px solid rgba(239, 68, 68, 0.2) !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 32px !important;
  height: 32px !important;
  padding: 0 !important;
  border-radius: 50% !important;
  transition: var(--transition-fast) !important;
  cursor: pointer !important;
  text-decoration: none !important;
}
}

/* Category Tags */
.category-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.15rem 0.45rem;
  font-size: 0.725rem;
  font-weight: 700;
  border-radius: 6px;
  background: rgba(2, 132, 199, 0.08);
  color: var(--color-accent-blue);
  border: 1px solid rgba(2, 132, 199, 0.15);
  vertical-align: middle;
}

/* Category Filter Container & Tabs */
.filter-container {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  align-items: center;
}

.filter-tab {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--color-card-border);
  padding: 0.45rem 1.1rem;
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  border-radius: 99px;
  cursor: pointer;
  transition: var(--transition-fast);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.filter-tab:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
}

.filter-tab.active {
  background: var(--gradient-accent);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.2);
}

/* Modal Category Manage Items */
.category-list-container {
  max-height: 200px;
  overflow-y: auto;
  margin-bottom: 1.5rem;
  padding-right: 0.25rem;
}

.category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-sm);
  background: rgba(15, 23, 42, 0.01);
  margin-bottom: 0.5rem;
}

.category-item-name {
  font-weight: 600;
  color: var(--color-text-primary);
  font-size: 0.9rem;
}