/* ============================================
   Map of Us 我们的地图 v2.0 — Reusable Component Styles
   Soft Romance Palette + Glassmorphism
   ============================================ */

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-family: var(--font-family);
  font-size: var(--font-button-md);
  font-weight: var(--weight-medium);
  line-height: 1.25;
  letter-spacing: 0;
  border-radius: var(--radius-sm);
  padding: 14px 24px;
  height: var(--btn-height);
  transition: background-color var(--transition-fast),
              box-shadow var(--transition-fast),
              transform var(--transition-fast);
  cursor: pointer;
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
}
.btn-primary:disabled {
  background-color: var(--color-primary-disabled);
  cursor: not-allowed;
  transform: none;
}

.btn-secondary {
  background-color: var(--color-canvas);
  color: var(--color-ink);
  border: 1px solid var(--color-ink);
  padding: 13px 23px;
}
.btn-secondary:hover {
  background-color: var(--color-bg-soft);
}

.btn-tertiary {
  background: transparent;
  color: var(--color-muted);
  padding: 6px 0;
  height: auto;
  font-size: var(--font-body-sm);
  font-weight: var(--weight-normal);
  text-decoration: none;
  letter-spacing: -0.01em;
  transition: color var(--transition-fast);
}
.btn-tertiary:hover {
  color: var(--color-primary);
}

.btn-pill {
  background-color: var(--color-primary);
  color: var(--color-on-primary);
  font-size: var(--font-button-sm);
  border-radius: var(--radius-full);
  padding: 10px 20px;
  height: auto;
}

.btn-danger {
  background-color: var(--color-error);
  color: var(--color-on-primary);
}
.btn-danger:hover {
  background-color: var(--color-error-hover);
}

.btn-sm {
  font-size: var(--font-button-sm);
  height: 36px;
  padding: 8px 16px;
}

.btn-icon {
  width: var(--icon-btn-sm);
  height: var(--icon-btn-sm);
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--color-ink);
  transition: background-color var(--transition-fast);
}
.btn-icon:hover {
  background-color: var(--color-surface-strong);
}
.btn-icon svg {
  width: 16px;
  height: 16px;
}

.btn-icon-outline {
  width: var(--icon-btn-md);
  height: var(--icon-btn-md);
  padding: 0;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-hairline);
  background-color: var(--color-canvas);
  color: var(--color-ink);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
.btn-icon-outline:hover {
  background-color: var(--color-surface-soft);
}

/* Glass button */
.btn-glass {
  background: var(--color-glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: var(--glass-border);
  color: var(--color-ink);
  box-shadow: var(--shadow-sm);
}
.btn-glass:hover {
  background: var(--color-glass-strong);
  box-shadow: var(--shadow-md);
}

/* === Forms === */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-label {
  font-size: var(--font-caption);
  font-weight: var(--weight-medium);
  color: var(--color-ink);
  letter-spacing: 0;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  height: var(--input-height);
  padding: 14px 12px;
  font-size: var(--font-body-md);
  font-family: var(--font-family);
  color: var(--color-ink);
  background-color: var(--color-canvas);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color var(--transition-fast),
              border-width var(--transition-fast);
}
.form-input:focus,
.form-select:focus {
  border-color: var(--color-primary);
  border-width: 2px;
}
.form-input::placeholder {
  color: var(--color-muted);
}
.form-input.error {
  border-color: var(--color-error);
}

.form-error {
  font-size: var(--font-caption-sm);
  color: var(--color-error);
  margin-top: var(--space-xs);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%233d3535' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-textarea {
  height: auto;
  min-height: 120px;
  resize: vertical;
  line-height: 1.5;
}

.radio-group {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.radio-label {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-body-sm);
  color: var(--color-ink);
  cursor: pointer;
}
.radio-label input[type="radio"] {
  accent-color: var(--color-primary);
  width: 18px;
  height: 18px;
}

/* === Cards === */
.card {
  background-color: var(--color-surface-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-normal),
              transform var(--transition-normal);
}
.card--hoverable:hover {
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

/* Glass card */
.card-glass {
  background: var(--color-glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-normal),
              transform var(--transition-normal);
}
.card-glass:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* === Modal === */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-scrim);
  backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-normal);
}
.modal-box {
  background: var(--color-canvas);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 90%;
  max-width: 520px;
  max-height: 85vh;
  overflow-y: auto;
  padding: var(--space-xl);
  animation: modalSlideIn var(--transition-slow);
}
.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}
.modal-title {
  font-size: var(--font-display-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
}
.modal-close {
  width: var(--icon-btn-sm);
  height: var(--icon-btn-sm);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-muted);
  transition: background-color var(--transition-fast);
}
.modal-close:hover {
  background-color: var(--color-surface-soft);
}
.modal-body {
  margin-bottom: var(--space-lg);
}
.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

@keyframes modalSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* === Toast === */
.toast {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 2000;
  background-color: var(--color-ink);
  color: var(--color-on-dark);
  font-size: var(--font-body-sm);
  font-weight: var(--weight-medium);
  padding: 12px 24px;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  animation: toastIn var(--transition-slow);
  white-space: nowrap;
}
.toast--success {
  background-color: var(--color-success);
}
.toast--error {
  background-color: var(--color-error);
}
.toast--out {
  animation: toastOut var(--transition-normal) forwards;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
}
@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  to {
    opacity: 0;
    transform: translateX(-50%) translateY(10px);
  }
}

/* === Empty State === */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-section) var(--space-lg);
  text-align: center;
}
.empty-state__icon {
  font-size: 48px;
  margin-bottom: var(--space-base);
}
.empty-state__title {
  font-size: var(--font-display-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}
.empty-state__text {
  font-size: var(--font-body-md);
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

/* === Badge === */
.badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-badge);
  font-weight: var(--weight-semibold);
  background-color: var(--color-canvas);
  color: var(--color-ink);
  border-radius: var(--radius-full);
  padding: 4px 10px;
  white-space: nowrap;
}

.tag-new {
  font-size: var(--font-uppercase-tag);
  font-weight: var(--weight-bold);
  letter-spacing: 0.32px;
  text-transform: uppercase;
  background-color: var(--color-canvas);
  color: var(--color-ink);
  border-radius: var(--radius-full);
  padding: 2px 6px;
}

/* === Stat Card === */
.stat-card {
  background: var(--color-glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: var(--space-base) var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.stat-card__value {
  font-size: var(--font-display-lg);
  font-weight: var(--weight-bold);
  color: var(--color-primary);
  line-height: 1.1;
}
.stat-card__label {
  font-size: var(--font-caption-sm);
  color: var(--color-muted);
}

/* === Pin Input (for lock screen) === */
.pin-inputs {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}
.pin-input {
  width: 56px;
  height: 64px;
  text-align: center;
  font-size: var(--font-display-lg);
  font-weight: var(--weight-semibold);
  border: 2px solid var(--color-hairline);
  border-radius: var(--radius-sm);
  background: var(--color-canvas);
  color: var(--color-ink);
  transition: border-color var(--transition-fast);
}
.pin-input:focus {
  border-color: var(--color-primary);
  outline: none;
}
.pin-input.filled {
  border-color: var(--color-primary);
  background: var(--color-primary-light);
}
.pin-input.error {
  border-color: var(--color-error);
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  50% { transform: translateX(6px); }
  75% { transform: translateX(-4px); }
}

/* === NumPad (for lock screen) === */
.numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  max-width: 260px;
  margin: 0 auto;
}
.numpad-btn {
  width: 72px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-display-sm);
  font-weight: var(--weight-medium);
  border-radius: var(--radius-md);
  background: var(--color-glass-bg);
  backdrop-filter: var(--glass-blur-light);
  -webkit-backdrop-filter: var(--glass-blur-light);
  border: var(--glass-border);
  color: var(--color-ink);
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
}
.numpad-btn:hover {
  background: var(--color-glass-strong);
  transform: scale(1.05);
}
.numpad-btn:active {
  transform: scale(0.95);
  background: var(--color-primary-light);
}
.numpad-btn--delete {
  font-size: var(--font-body-md);
  color: var(--color-muted);
}
.numpad-btn--empty {
  pointer-events: none;
  background: transparent;
  border: none;
}

/* === Page Title === */
.page-title {
  font-size: var(--font-display-md);
  font-weight: var(--weight-bold);
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}
.page-subtitle {
  font-size: var(--font-body-sm);
  color: var(--color-muted);
  margin-bottom: var(--space-lg);
}

/* === Section Header === */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-base);
}
.section-title {
  font-size: var(--font-title-md);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
}

/* === Toggle Switch === */
.toggle {
  position: relative;
  width: 48px;
  height: 28px;
  display: inline-block;
}
.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}
.toggle-slider {
  position: absolute;
  cursor: pointer;
  inset: 0;
  background-color: var(--color-hairline);
  border-radius: var(--radius-full);
  transition: background-color var(--transition-fast);
}
.toggle-slider::before {
  content: '';
  position: absolute;
  height: 22px;
  width: 22px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: transform var(--transition-fast);
  box-shadow: var(--shadow-sm);
}
.toggle input:checked + .toggle-slider {
  background-color: var(--color-primary);
}
.toggle input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* === Sidebar Toggle (Mobile) === */
.sidebar-toggle {
  display: none;
  position: fixed;
  top: var(--space-base);
  left: var(--space-base);
  z-index: 110;
  width: var(--icon-btn-md);
  height: var(--icon-btn-md);
  border-radius: var(--radius-full);
  background: var(--color-glass-strong);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--glass-border);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-md);
}