/* Reusable UI Components */

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  user-select: none;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

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

.btn-primary {
  background: var(--accent-primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(var(--accent-primary-rgb), 0.35);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  box-shadow: 0 6px 20px rgba(var(--accent-primary-rgb), 0.45);
}

.btn-secondary {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: var(--border-light);
}

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

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
}

.btn-ghost:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
  border-color: rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-full {
  width: 100%;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 15px 24px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.btn-icon-round {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ==========================================================================
   Cards
   ========================================================================== */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 18px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card-elevated {
  background: var(--bg-surface-elevated);
  box-shadow: var(--shadow-sm);
}

.card-interactive {
  cursor: pointer;
}

.card-interactive:active {
  transform: scale(0.985);
}

.card-interactive:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-md);
}

.card-gradient-border {
  background: linear-gradient(var(--bg-surface), var(--bg-surface)) padding-box,
              linear-gradient(135deg, rgba(99, 102, 241, 0.4), rgba(255, 255, 255, 0.08)) border-box;
  border: 1px solid transparent;
}

/* ==========================================================================
   Form Controls
   ========================================================================== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 16px;
}

.form-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.form-label .optional {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
}

.input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-left {
  position: absolute;
  left: 14px;
  color: var(--text-muted);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.input-icon-right {
  position: absolute;
  right: 14px;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  background: transparent;
  border: none;
  padding: 4px;
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14px;
  transition: all var(--transition-fast);
  outline: none;
}

.input-wrapper.has-icon-left .form-input {
  padding-left: 42px;
}

.input-wrapper.has-icon-right .form-input {
  padding-right: 42px;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-subtle);
}

.form-textarea {
  min-height: 85px;
  resize: vertical;
  line-height: 1.5;
}

.form-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* ==========================================================================
   Switch Toggle
   ========================================================================== */
.switch-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
}

.switch-row:last-child {
  border-bottom: none;
}

.switch-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-right: 16px;
}

.switch-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.switch-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.switch-toggle {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
  flex-shrink: 0;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  transition: 0.3s;
  border-radius: 34px;
}

.switch-slider:before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: #FFFFFF;
  transition: 0.3s;
  border-radius: 50%;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.switch-toggle input:checked + .switch-slider {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
}

.switch-toggle input:checked + .switch-slider:before {
  transform: translateX(22px);
}

/* ==========================================================================
   Skill Chips & Badges
   ========================================================================== */
.chips-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition-fast);
}

.skill-chip .remove-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 11px;
  transition: all var(--transition-fast);
}

.skill-chip .remove-btn:hover {
  background: var(--danger);
  color: white;
}

.skill-chip.suggested {
  cursor: pointer;
  background: transparent;
  border: 1px dashed var(--border-light);
  color: var(--text-secondary);
}

.skill-chip.suggested:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-subtle);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.badge-accent {
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border: 1px solid var(--accent-border);
}

.badge-neutral {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse-ring 1.8s infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

/* ==========================================================================
   Progress Bar
   ========================================================================== */
.progress-container {
  width: 100%;
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  margin-bottom: 6px;
}

.progress-track {
  width: 100%;
  height: 8px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), #8B5CF6);
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Timeline Items (Experience & Education)
   ========================================================================== */
.timeline-container {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: 20px;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  padding-bottom: 20px;
}

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

.timeline-dot {
  position: absolute;
  left: -20px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 3px solid var(--accent-primary);
  z-index: 2;
}

.timeline-content {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 16px;
}

.timeline-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-subtitle {
  font-size: 13px;
  color: var(--accent-primary);
  font-weight: 500;
  margin-bottom: 4px;
}

.timeline-date {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-bottom: 8px;
}

.timeline-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.timeline-actions {
  display: flex;
  gap: 8px;
  margin-top: 10px;
  justify-content: flex-end;
}

/* ==========================================================================
   Bottom Navigation Bar
   ========================================================================== */
.mobile-bottom-nav {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-surface-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 0 10px;
  padding-bottom: 8px;
  z-index: 900;
  user-select: none;
  transition: transform var(--transition-normal);
}

.mobile-bottom-nav.nav-hidden {
  transform: translateY(100%);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 11px;
  font-weight: 500;
  transition: all var(--transition-fast);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  flex: 1;
}

.nav-item svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
  stroke-width: 2;
  transition: transform var(--transition-fast);
}

.nav-item:active svg {
  transform: scale(0.9);
}

.nav-item.active {
  color: var(--accent-primary);
  font-weight: 700;
}

.nav-item.active svg {
  stroke-width: 2.3;
}

/* Visually Emphasized Center Create Button */
.nav-item-create {
  position: relative;
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding-bottom: 2px;
}

.nav-create-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), #8B5CF6);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 18px rgba(var(--accent-primary-rgb), 0.5), 0 0 0 4px var(--bg-app);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  margin-top: -16px;
}

.nav-create-btn svg {
  width: 24px;
  height: 24px;
  stroke: #FFFFFF;
  stroke-width: 2.5;
}

.nav-create-btn:hover {
  transform: translateY(-2px) scale(1.05);
  box-shadow: 0 8px 24px rgba(var(--accent-primary-rgb), 0.65), 0 0 0 4px var(--bg-app);
}

.nav-create-btn:active {
  transform: translateY(0) scale(0.94);
}

.nav-item-create .nav-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-top: 3px;
}

.nav-item-create.active .nav-label {
  color: var(--accent-primary);
}

/* ==========================================================================
   Bottom Sheet Modals & Popups
   ========================================================================== */
.sheet-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 1200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.sheet-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.bottom-sheet {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  max-height: 90%;
  background: var(--bg-surface);
  border-top-left-radius: var(--radius-xl);
  border-top-right-radius: var(--radius-xl);
  border-top: 1px solid var(--border-light);
  box-shadow: 0 -10px 40px rgba(0, 0, 0, 0.6);
  z-index: 1210;
  transform: translateY(105%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.bottom-sheet.active {
  transform: translateY(0);
}

.sheet-handle-bar {
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 10px 0 6px;
  cursor: grab;
}

.sheet-handle {
  width: 40px;
  height: 4px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.2);
}

.sheet-header {
  padding: 10px 20px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
}

.sheet-title {
  font-size: 17px;
  font-weight: 700;
}

.sheet-close-btn {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-secondary);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.sheet-body {
  padding: 20px;
  overflow-y: auto;
  flex: 1;
  scrollbar-width: thin;
}

.sheet-footer {
  padding: 14px 20px 24px;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface);
  display: flex;
  gap: 12px;
}

/* ==========================================================================
   Toast Notifications
   ========================================================================== */
.toast-container {
  position: absolute;
  top: 55px;
  left: 20px;
  right: 20px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  background: rgba(17, 24, 39, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 13px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  transform: translateY(-20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: auto;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast-icon {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.toast-success .toast-icon {
  background: var(--success);
  color: white;
}

.toast-info .toast-icon {
  background: var(--accent-primary);
  color: white;
}

/* ==========================================================================
   Empty States
   ========================================================================== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 36px 20px;
  background: var(--bg-subtle);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  margin: 10px 0;
}

.empty-icon-wrap {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
}

.empty-icon-wrap svg {
  width: 28px;
  height: 28px;
}

.empty-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.empty-desc {
  font-size: 13px;
  color: var(--text-secondary);
  max-width: 260px;
  margin-bottom: 18px;
  line-height: 1.4;
}

/* ==========================================================================
   Alerts, Warnings & Helper Chips
   ========================================================================== */
.toast-danger .toast-icon {
  background: var(--danger);
  color: white;
}

.badge-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.auth-error-alert {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #FCA5A5;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 16px;
  line-height: 1.4;
  animation: shakeAlert 0.4s ease;
}

@keyframes shakeAlert {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

.demo-chip {
  cursor: pointer;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.demo-chip:hover {
  background: var(--accent-subtle);
  border-color: var(--accent-border);
  color: var(--accent-primary);
}