/**
 * CA Assist - Proprietary Software
 * Copyright (c) 2026 Sana Shahzad. All rights reserved.
 * Component Styles
 */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.625rem 1.125rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  min-height: 44px; /* Touch target minimum */
  min-width: 44px;
  user-select: none;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-primary-contrast);
  box-shadow: var(--shadow-xs);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--bg-surface-subtle);
  border-color: var(--color-neutral-400);
}

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

.btn-ghost:hover:not(:disabled) {
  background-color: var(--bg-surface-subtle);
}

.btn-danger {
  background-color: var(--color-danger);
  color: #ffffff;
}

.btn-danger:hover:not(:disabled) {
  background-color: #b91c1c;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--font-size-xs);
  min-height: 36px;
}

.btn-lg {
  padding: 0.875rem 1.5rem;
  font-size: var(--font-size-base);
  min-height: 48px;
}

.btn-icon-only {
  padding: 0.5rem;
  width: 44px;
  height: 44px;
}

/* Forms & Inputs */
.form-group {
  margin-block-end: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

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

.form-label .form-required {
  color: var(--color-danger);
  margin-inline-start: var(--space-1);
}

.form-control {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: var(--font-size-base);
  color: var(--text-main);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  min-height: 44px;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control.has-error {
  border-color: var(--color-danger);
}

.form-control.has-warning {
  border-color: var(--color-warning);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-block-start: var(--space-1);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  font-weight: 500;
  margin-block-start: var(--space-1);
}

.form-warning {
  font-size: var(--font-size-xs);
  color: var(--color-warning);
  font-weight: 500;
  margin-block-start: var(--space-1);
}

textarea.form-control {
  resize: vertical;
  min-height: 96px;
  line-height: var(--line-height-normal);
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23737167'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1.25rem;
  padding-inline-end: 2.25rem;
}

html[dir="rtl"] select.form-control {
  background-position: left 0.75rem center;
}

/* Cards */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs);
  padding: var(--space-5);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.card-clickable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
  cursor: pointer;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: var(--space-4);
  gap: var(--space-3);
}

.card-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.2rem 0.55rem;
  font-size: var(--font-size-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1;
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

.badge-success {
  background: var(--color-success-bg);
  color: var(--color-success-text);
  border: 1px solid var(--color-success-border);
}

.badge-warning {
  background: var(--color-warning-bg);
  color: var(--color-warning-text);
  border: 1px solid var(--color-warning-border);
}

.badge-danger {
  background: var(--color-danger-bg);
  color: var(--color-danger-text);
  border: 1px solid var(--color-danger-border);
}

.badge-neutral {
  background: var(--bg-surface-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-subtle);
}

/* Confidence Badges */
.conf-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  margin-inline-end: 4px;
}
.conf-high { background-color: var(--conf-high); }
.conf-med { background-color: var(--conf-med); }
.conf-low { background-color: var(--conf-low); }

/* Banners & Notices */
.alert-banner {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  margin-block-end: var(--space-4);
  font-size: var(--font-size-sm);
}

.alert-banner-info {
  background-color: var(--color-info-bg);
  border: 1px solid var(--color-info-border);
  color: var(--color-info-text);
}

.alert-banner-warning {
  background-color: var(--color-warning-bg);
  border: 1px solid var(--color-warning-border);
  color: var(--color-warning-text);
}

.alert-banner-danger {
  background-color: var(--color-danger-bg);
  border: 1px solid var(--color-danger-border);
  color: var(--color-danger-text);
}

.alert-banner-success {
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  color: var(--color-success-text);
}

/* Tabs */
.tabs-nav {
  display: flex;
  gap: var(--space-2);
  border-bottom: 1px solid var(--border-subtle);
  margin-block-end: var(--space-5);
  overflow-x: auto;
  padding-bottom: 2px;
}

.tab-btn {
  padding: 0.625rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-main);
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* Modal & Dialogs */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(18, 19, 18, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal);
}

.modal-overlay.open {
  opacity: 1;
  visibility: visible;
}

.modal-container {
  background-color: var(--bg-surface);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transform: scale(0.95);
  transition: transform var(--transition-normal);
  border: 1px solid var(--border-subtle);
}

.modal-overlay.open .modal-container {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-lg);
  font-weight: 700;
}

.modal-body {
  padding: var(--space-5);
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  background-color: var(--bg-surface-subtle);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + 16px);
  right: var(--space-4);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  pointer-events: none;
}

html[dir="rtl"] .toast-container {
  right: auto;
  left: var(--space-4);
}

@media (min-width: 768px) {
  .toast-container {
    bottom: var(--space-6);
    right: var(--space-6);
  }
  html[dir="rtl"] .toast-container {
    left: var(--space-6);
    right: auto;
  }
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background-color: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-size: var(--font-size-sm);
  min-width: 280px;
  max-width: 420px;
  animation: toastSlideUp 200ms ease-out;
}

@keyframes toastSlideUp {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Dropzone */
.dropzone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-4);
  text-align: center;
  background-color: var(--bg-surface-subtle);
  transition: all var(--transition-fast);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.dropzone:hover,
.dropzone.drag-active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

/* Progress bar */
.progress-bar-container {
  width: 100%;
  height: 8px;
  background-color: var(--border-subtle);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-block: var(--space-2);
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width 150ms ease-in-out;
}

.progress-bar-fill.indeterminate {
  width: 40%;
  animation: indeterminate 1.5s infinite ease-in-out;
}

@keyframes indeterminate {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(350%); }
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-10) var(--space-4);
  gap: var(--space-3);
}

.empty-state-icon {
  width: 64px;
  height: 64px;
  color: var(--color-neutral-400);
  margin-bottom: var(--space-2);
}

.empty-state-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-main);
}

.empty-state-desc {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  max-width: 400px;
}

/* Data Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-surface);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: start;
  font-size: var(--font-size-sm);
}

.data-table th,
.data-table td {
  padding: 0.75rem 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.data-table th {
  background-color: var(--bg-surface-subtle);
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 0.05em;
  white-space: normal;
  vertical-align: bottom;
}

/* keep the Edit / Delete buttons always reachable */
.data-table td:last-child {
  white-space: nowrap;
  text-align: end;
}

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

.data-table tbody tr:hover {
  background-color: var(--bg-surface-subtle);
}

/* Skeletons */
.skeleton {
  background: linear-gradient(90deg, var(--border-subtle) 25%, var(--bg-surface-subtle) 50%, var(--border-subtle) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}


/* Tables become stacked cards on phones (no sideways scrolling) */
@media (max-width: 640px) {
  .table-responsive { border: 0; background: transparent; overflow: visible; }
  .data-table, .data-table tbody { display: block; }
  .data-table thead { display: none; }
  .data-table tr {
    display: block;
    margin-bottom: var(--space-3);
    padding: var(--space-2) var(--space-3);
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
  }
  .data-table td {
    display: flex !important;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    padding: 0.45rem 0;
    border-bottom: 1px dashed var(--border-subtle);
    text-align: end;
    white-space: normal;
  }
  .data-table td:last-child { border-bottom: 0; justify-content: flex-end; }
  .data-table td::before {
    content: attr(data-label);
    flex: none;
    max-width: 48%;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    text-align: start;
  }
  .data-table td:last-child::before { display: none; }
}


/* Dark theme: keep text readable on every surface */
[data-theme="dark"] .btn-danger { color: #2a0a0a; }
[data-theme="dark"] .btn-danger:hover:not(:disabled) { background-color: #fca5a5; }
[data-theme="dark"] .letter-sheet,
[data-theme="dark"] .letter-sheet * { color: #141311; }
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]),
select,
textarea {
  color: var(--text-main);
  background-color: var(--bg-surface);
}