/* ============================================================
   SELFEVAL THEME - Matching Landing Page
   Primary: #667eea, Secondary: #764ba2
   ============================================================ */

:root {
  --primary-color: #667eea;
  --primary-dark: #5a6fd6;
  --secondary-color: #764ba2;
  --gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --text-dark: #2d3748;
  --text-muted: #6c757d;
  --bg-light: #f8f9fa;
  --border-color: #e9ecef;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --info: #17a2b8;
}

/* Base Styles */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-light);
  color: var(--text-dark);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

main {
  flex: 1;
}

/* ============================================================
   NAVBAR - Gradient Style
   ============================================================ */

.navbar {
  background: var(--gradient) !important;
  box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

.navbar-brand {
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.5px;
}

.navbar-brand i {
  margin-right: 0.5rem;
}

.nav-link {
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.nav-link:hover {
  opacity: 0.85;
}

/* ============================================================
   BUTTONS - Gradient & Modern Style
   ============================================================ */

.btn {
  font-weight: 500;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--gradient);
  border: none;
  box-shadow: 0 2px 4px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline-primary {
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline-primary:hover {
  background: var(--gradient);
  border-color: transparent;
}

#generate-btn,
#submit-btn,
#next-btn {
  min-width: 150px;
}

/* ============================================================
   CARDS - Modern Shadow & Border
   ============================================================ */

.card {
  border: none;
  border-radius: 12px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.card-header {
  background-color: #fff;
  border-bottom: 1px solid var(--border-color);
  border-radius: 12px 12px 0 0 !important;
  font-weight: 600;
}

.card-footer {
  background-color: #fff;
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 12px 12px !important;
}

/* ============================================================
   COURSE CARDS (Home Page)
   ============================================================ */

.course-card {
  cursor: pointer;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(102, 126, 234, 0.15);
  border-color: rgba(102, 126, 234, 0.3);
}

.course-card .card-title {
  color: var(--text-dark);
  font-size: 1.1rem;
  font-weight: 600;
}

.course-card .card-text {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  text-overflow: ellipsis;
  min-height: 40px;
  max-height: 40px;
}

.course-card .card-footer {
  padding: 0.75rem 1rem;
}

.course-card .btn {
  pointer-events: none;
}

.course-card .btn-primary {
  background: var(--gradient);
}

/* ============================================================
   BADGES
   ============================================================ */

.badge {
  font-weight: 500;
  padding: 0.4em 0.8em;
  border-radius: 6px;
}

.badge.bg-primary {
  background: var(--gradient) !important;
}

.badge.bg-outline-secondary {
  background-color: transparent !important;
  border: 1px solid var(--text-muted);
  color: var(--text-muted);
}

/* ============================================================
   TAB NAVIGATION
   ============================================================ */

.nav-tabs {
  border-bottom: 2px solid var(--border-color);
}

.nav-tabs .nav-link {
  border: none;
  color: var(--text-muted);
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  margin-bottom: -2px;
  border-radius: 8px 8px 0 0;
  transition: all 0.2s ease;
}

.nav-tabs .nav-link:hover {
  color: var(--primary-color);
  background-color: rgba(102, 126, 234, 0.05);
}

.nav-tabs .nav-link.active {
  color: var(--primary-color);
  border: none;
  border-bottom: 3px solid var(--primary-color);
  background: transparent;
}

/* Pills */
.nav-pills .nav-link {
  border-radius: 8px;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.nav-pills .nav-link:hover {
  color: var(--primary-color);
  background-color: rgba(102, 126, 234, 0.1);
}

.nav-pills .nav-link.active {
  background: var(--gradient);
}

/* ============================================================
   FORMS
   ============================================================ */

.form-control, .form-select {
  border-radius: 8px;
  border: 1px solid var(--border-color);
  padding: 0.625rem 0.875rem;
  transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.form-check-input:focus {
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

/* Options Container */
.options-container .form-check {
  padding: 0.75rem 1rem 0.75rem 2.5rem;
  margin-bottom: 0.5rem;
  background-color: #f8f9fa;
  border-radius: 8px;
  transition: all 0.15s ease;
  border: 1px solid transparent;
}

.options-container .form-check:hover {
  background-color: rgba(102, 126, 234, 0.08);
  border-color: rgba(102, 126, 234, 0.2);
}

.options-container .form-check-input:checked + .form-check-label {
  font-weight: 500;
  color: var(--primary-color);
}

/* ============================================================
   ALERTS
   ============================================================ */

.alert {
  border: none;
  border-radius: 10px;
  border-left: 4px solid;
}

.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-left-color: var(--success);
  color: #155724;
}

.alert-info {
  background-color: rgba(102, 126, 234, 0.1);
  border-left-color: var(--primary-color);
  color: #0c5460;
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.15);
  border-left-color: var(--warning);
  color: #856404;
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  border-left-color: var(--danger);
  color: #721c24;
}

/* ============================================================
   RESULT DISPLAY
   ============================================================ */

.result-icon {
  font-size: 2.5rem;
  width: 60px;
  height: 60px;
  min-width: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  margin-right: 1rem;
}

.result-icon.success {
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.15) 0%, rgba(40, 167, 69, 0.25) 100%);
  color: var(--success);
}

.result-icon.error {
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.15) 0%, rgba(220, 53, 69, 0.25) 100%);
  color: var(--danger);
}

.card.border-success {
  border-left: 4px solid var(--success) !important;
}

.card.border-danger {
  border-left: 4px solid var(--danger) !important;
}

/* ============================================================
   CHAT INTERFACE (Interview)
   ============================================================ */

.chat-messages {
  max-height: 400px;
  overflow-y: auto;
  padding: 1rem;
  background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.chat-message {
  max-width: 85%;
}

.chat-message.interviewer {
  margin-right: auto;
  max-width: 100%;
}

.chat-message.user {
  margin-left: auto;
  text-align: right;
}

.chat-message.interviewer .chat-bubble {
  width: 100%;
  display: block;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-dark);
  background-color: #fff !important;
  border: 1px solid var(--border-color);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  border-radius: 12px;
}

.chat-bubble {
  display: inline-block;
  max-width: 100%;
  word-wrap: break-word;
  text-align: left;
  padding: 1rem;
  border-radius: 12px;
}

.chat-bubble p {
  margin-bottom: 0.75rem;
}

.chat-bubble p:last-child {
  margin-bottom: 0;
}

.chat-message.interviewer .chat-bubble strong {
  color: var(--primary-color);
}

.chat-message.interviewer .chat-bubble code {
  background-color: rgba(102, 126, 234, 0.1);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  color: var(--secondary-color);
  font-size: 0.95em;
}

.chat-message.user .chat-bubble {
  background: var(--gradient) !important;
  color: white !important;
  box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.chat-message small {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

#interview-input {
  resize: none;
  border-radius: 8px 0 0 8px;
}

#send-response-btn {
  border-radius: 0 8px 8px 0;
  background: var(--gradient);
  border: none;
}

/* Interview Summary */
#summary-content h6 {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--text-dark);
}

#summary-content ul {
  padding-left: 1.25rem;
}

#summary-content .badge {
  font-size: 1.5rem;
  padding: 0.5rem 1rem;
}

/* Past Interviews List */
#past-interviews .border-bottom:last-child {
  border-bottom: none !important;
}

/* ============================================================
   HISTORY & ACTIVITY
   ============================================================ */

#activity-content {
  max-height: 300px;
  overflow-y: auto;
}

.activity-item:last-child {
  border-bottom: none !important;
  margin-bottom: 0 !important;
  padding-bottom: 0 !important;
}

.history-card {
  cursor: pointer;
  transition: all 0.2s ease;
}

.history-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.history-card.border-success {
  border-left: 4px solid var(--success) !important;
}

.history-card.border-danger {
  border-left: 4px solid var(--danger) !important;
}

/* History Sub-tabs */
#historySubTabs {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.5rem;
}

#historySubTabs .nav-link {
  color: var(--text-muted);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  margin-right: 0.5rem;
}

#historySubTabs .nav-link:hover {
  color: var(--primary-color);
  background-color: rgba(102, 126, 234, 0.1);
}

#historySubTabs .nav-link.active {
  color: #fff;
  background: var(--gradient);
}

/* Interview History Cards */
.interview-history-card {
  transition: all 0.2s ease;
}

.interview-history-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.interview-history-card.border-success {
  border-left-color: var(--success) !important;
}

.interview-history-card.border-warning {
  border-left-color: var(--warning) !important;
}

.interview-history-card.border-danger {
  border-left-color: var(--danger) !important;
}

/* ============================================================
   PERFORMANCE DASHBOARD
   ============================================================ */

.col-md-3 .card {
  border-left: 4px solid var(--primary-color);
}

.motivation-box {
  border-left: 4px solid var(--success);
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.05) 0%, rgba(40, 167, 69, 0.1) 100%);
  border-radius: 10px;
  padding: 1rem;
}

.next-steps {
  border-left: 4px solid var(--primary-color);
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(102, 126, 234, 0.1) 100%);
  border-radius: 10px;
  padding: 1rem;
}

/* Charts */
canvas {
  max-height: 300px;
}

/* ============================================================
   BREADCRUMB
   ============================================================ */

.breadcrumb {
  background: transparent;
  padding: 0;
  margin-bottom: 0.5rem;
}

.breadcrumb-item a {
  color: var(--primary-color);
  text-decoration: none;
  transition: all 0.2s ease;
}

.breadcrumb-item a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* ============================================================
   LOADING OVERLAY
   ============================================================ */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.spinner-border {
  color: var(--primary-color) !important;
}

/* ============================================================
   MODAL
   ============================================================ */

.modal-content {
  border: none;
  border-radius: 16px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

.modal-header {
  border-bottom: 1px solid var(--border-color);
  border-radius: 16px 16px 0 0;
}

.modal-footer {
  border-top: 1px solid var(--border-color);
  border-radius: 0 0 16px 16px;
}

.modal-body h5, .modal-body h6 {
  margin-top: 1rem;
}

.modal-body .lead {
  background-color: var(--bg-light);
  padding: 1rem;
  border-radius: 8px;
}

/* ============================================================
   QUESTION BADGE
   ============================================================ */

#question-type-badge {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: var(--gradient);
}

/* Text Answer */
#answer-input {
  min-height: 120px;
  resize: vertical;
}

/* ============================================================
   FOOTER
   ============================================================ */

.footer {
  border-top: 1px solid var(--border-color);
  background: #fff;
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.text-muted.text-center.py-4 {
  font-style: italic;
}

/* Suggestions Lists */
#suggestions-content ul li {
  padding: 0.25rem 0;
}

#suggestions-content h6 {
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}

/* ============================================================
   AUTH PAGES (Sign In / Sign Up)
   ============================================================ */

.auth-container {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient);
  padding: 2rem;
}

.auth-card {
  background: #fff;
  border-radius: 20px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
  padding: 2.5rem;
  width: 100%;
  max-width: 420px;
}

.auth-card h2 {
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.auth-card .subtitle {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.auth-card .form-label {
  font-weight: 500;
  color: var(--text-dark);
}

.auth-card .btn-primary {
  padding: 0.75rem;
  font-size: 1rem;
}

.auth-card .divider {
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
  color: var(--text-muted);
}

.auth-card .divider::before,
.auth-card .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.auth-card .divider span {
  padding: 0 1rem;
  font-size: 0.875rem;
}

.auth-logo {
  font-size: 2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.auth-link {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.auth-link:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

.auth-divider {
  display: flex;
  align-items: center;
  margin: 1.5rem 0;
  color: var(--text-muted);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border-color);
}

.auth-divider span {
  padding: 0 1rem;
  font-size: 0.875rem;
}

.auth-success-icon {
  color: var(--primary-color);
}

/* ============================================================
   PAGE HEADERS
   ============================================================ */

.page-header {
  background: var(--gradient);
  color: #fff;
  padding: 2rem 0;
  margin-bottom: 2rem;
  border-radius: 0 0 20px 20px;
}

.page-header h1 {
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.page-header p {
  opacity: 0.9;
  margin-bottom: 0;
}

/* ============================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================ */

@media (max-width: 768px) {
  .col-md-3 .card-body h2 {
    font-size: 1.5rem;
  }

  .activity-item .text-truncate {
    max-width: 150px !important;
  }

  .nav-tabs .nav-link {
    padding: 0.5rem 0.75rem;
    font-size: 0.9rem;
  }

  .chat-messages {
    max-height: 300px;
  }

  .chat-message {
    max-width: 90%;
  }

  .course-card .card-title {
    font-size: 1rem;
  }

  #historySubTabs .nav-link {
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
  }

  .auth-card {
    padding: 1.5rem;
    margin: 1rem;
  }

  .page-header {
    padding: 1.5rem 0;
  }
}