/* =============================================================
   boards.solutions — Components
   Buttons, badges, cards, forms, table indicators, widget demo.
   Single responsibility: visual component styles only.
   ============================================================= */

/* ============================================================
   Button System
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.5625rem var(--space-5);   /* 9px 20px */
  font-size: 1rem;                      /* 14px base × 1 = 14px */
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.01em;
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1.5px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), border-color var(--transition-fast),
              color var(--transition-fast), box-shadow var(--transition-fast),
              transform var(--transition-fast);
  position: relative;
  overflow: hidden;
  min-height: 40px;
  min-width: 40px;
  -webkit-user-select: none;
  user-select: none;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary */
.btn--primary {
  background: var(--color-brand-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-brand-primary);
  box-shadow: 0 1px 3px rgba(37,99,235,0.25), 0 1px 0 rgba(255,255,255,0.07) inset;
}

.btn--primary:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  box-shadow: 0 4px 10px rgba(37,99,235,0.32), 0 1px 0 rgba(255,255,255,0.07) inset;
  transform: translateY(-1px);
}

.btn--primary:active {
  background: var(--color-blue-900);
  border-color: var(--color-blue-900);
  transform: translateY(0);
  box-shadow: none;
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
}

.btn--ghost:hover {
  background: var(--color-brand-light);
  box-shadow: 0 2px 6px rgba(37,99,235,0.1);
  transform: translateY(-1px);
}

.btn--ghost:active {
  background: var(--color-blue-100);
  transform: translateY(0);
}

/* Secondary / Neutral */
.btn--secondary {
  background: var(--color-surface-base);
  color: var(--color-text-primary);
  border-color: var(--color-border-default);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

.btn--secondary:hover {
  border-color: var(--color-slate-400);
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
  transform: translateY(-1px);
}

.btn--secondary:active {
  background: var(--color-surface-subtle);
  transform: translateY(0);
}

/* Ghost Inverse — for dark section backgrounds */
.btn--ghost-inverse {
  background: transparent;
  color: var(--color-text-inverse);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn--ghost-inverse:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-text-inverse);
}

/* Sizes */
.btn--sm {
  padding: 0.375rem var(--space-3);   /* 6px 12px */
  font-size: var(--font-size-sm);
  min-height: 32px;
  border-radius: var(--radius-md);
}

.btn--lg {
  padding: 0.6875rem var(--space-7);  /* 11px 28px */
  font-size: var(--font-size-base);
  min-height: 46px;
  border-radius: var(--radius-lg);
}

.btn--xl {
  padding: var(--space-4) var(--space-10);
  font-size: var(--font-size-lg);
  min-height: 54px;
  border-radius: var(--radius-lg);
}

/* Full width modifier */
.btn--full {
  width: 100%;
}

/* Icon-only */
.btn--icon {
  padding: var(--space-2);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
}

.btn svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  pointer-events: none;
}

.btn--sm svg {
  width: 16px;
  height: 16px;
}

.btn--lg svg,
.btn--xl svg {
  width: 20px;
  height: 20px;
}


/* ============================================================
   Badge System
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: 1.4;
  border-radius: var(--radius-full);
  white-space: nowrap;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid transparent;
}

.badge--new {
  background: var(--color-brand-light);
  color: var(--color-brand-primary);
  border-color: var(--color-blue-100);
}

.badge--primary {
  background: var(--color-brand-primary);
  color: var(--color-text-inverse);
  border-color: var(--color-brand-primary);
}

.badge--success {
  background: #ECFDF5;
  color: #059669;
  border-color: #A7F3D0;
}

.badge--warning {
  background: #FFFBEB;
  color: #D97706;
  border-color: #FDE68A;
}

.badge--error {
  background: #FEF2F2;
  color: #DC2626;
  border-color: #FECACA;
}

.badge--neutral {
  background: var(--color-slate-100);
  color: var(--color-text-secondary);
  border-color: var(--color-slate-200);
}


/* ============================================================
   Feature Card
   ============================================================ */
.feature-card {
  background: var(--color-surface-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: transform var(--transition-base), box-shadow var(--transition-base),
              border-color var(--transition-base);
  box-shadow: var(--shadow-sm);
}

@media (prefers-reduced-motion: no-preference) {
  .feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: var(--color-border-focus);
  }
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-brand-light);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-brand-primary);
  flex-shrink: 0;
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
}

.feature-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-snug);
}

.feature-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}


/* ============================================================
   Problem / Solution Cards
   ============================================================ */
.problem-card {
  background: var(--color-surface-subtle);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
}

.problem-card--highlight {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-card-hover);
}

.problem-card__icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  flex-shrink: 0;
}

.problem-card:not(.problem-card--highlight) .problem-card__icon {
  background: var(--color-border-default);
  color: var(--color-text-secondary);
}

.problem-card--highlight .problem-card__icon {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-text-inverse);
}

.problem-card__icon svg {
  width: 22px;
  height: 22px;
}

.problem-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-3);
  line-height: var(--line-height-snug);
}

.problem-card--highlight .problem-card__title {
  color: var(--color-text-inverse);
}

.problem-card__badge {
  margin-bottom: var(--space-5);
}

.problem-card__list {
  list-style: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: auto;
  padding-top: var(--space-5);
}

.problem-card__list li {
  font-size: var(--font-size-sm);
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  line-height: var(--line-height-snug);
}

.problem-card:not(.problem-card--highlight) .problem-card__list li {
  color: var(--color-text-secondary);
}

.problem-card--highlight .problem-card__list li {
  color: rgba(255, 255, 255, 0.9);
}

.list-icon {
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  margin-top: 1px;
}

.list-icon--check {
  color: var(--color-success);
}

.problem-card--highlight .list-icon--check {
  color: #6EE7B7;
}

.list-icon--cross {
  color: var(--color-error);
}

.problem-card--highlight .list-icon--cross {
  color: rgba(255, 255, 255, 0.5);
}


/* ============================================================
   Product Card
   ============================================================ */
.product-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
  box-shadow: var(--shadow-sm);
}

@media (prefers-reduced-motion: no-preference) {
  .product-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
  }
}

.product-card__image-wrapper {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface-subtle);
  position: relative;
}

.product-card__image-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--color-blue-50) 0%, var(--color-slate-100) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.product-card__image-placeholder svg {
  width: 32px;
  height: 32px;
  opacity: 0.4;
}

.product-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  flex: 1;
}

.product-card__body .badge {
  align-self: flex-start;
}

.product-card h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  line-height: var(--line-height-snug);
}

.product-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  flex: 1;
}

.product-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border-default);
}

.product-card__price {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: 1;
}

/* Edit tooltip (shown in edit-mode simulation) */
.edit-tooltip {
  display: none;
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  background: var(--color-brand-primary);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  align-items: center;
  gap: var(--space-1);
  pointer-events: none;
  z-index: 10;
  white-space: nowrap;
}

.edit-tooltip svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}


/* ============================================================
   Form Components
   ============================================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.form-label .required-mark {
  color: var(--color-error);
  margin-left: var(--space-1);
}

.form-label {
  font-size: 0.8125rem;  /* ~11.4px at 14px base — crisp label above input */
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  letter-spacing: 0.01em;
}

.form-input {
  width: 100%;
  padding: 0.5rem var(--space-3);      /* 8px 12px — compact */
  font-size: 1rem;                      /* inherits 14px base */
  color: var(--color-text-primary);
  background: var(--color-surface-base);
  border: 1.5px solid var(--color-border-default);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast),
              background var(--transition-fast);
  min-height: 38px;
  appearance: none;
  -webkit-appearance: none;
  box-shadow: 0 1px 2px rgba(0,0,0,0.04) inset;
}

.form-input::placeholder {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.form-input:hover {
  border-color: var(--color-slate-400);
}

.form-input:focus {
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgb(37 99 235 / 0.12);
  outline: none;
  background: var(--color-surface-base);
}

.form-input[aria-invalid="true"] {
  border-color: var(--color-error);
}

.form-input[aria-invalid="true"]:focus {
  box-shadow: 0 0 0 3px rgb(239 68 68 / 0.15);
}

.form-error {
  font-size: var(--font-size-sm);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
  min-height: 1.25rem;
}

.form-error:empty {
  display: none;
}

.form-error svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.form-success {
  font-size: var(--font-size-sm);
  color: var(--color-success);
  font-weight: var(--font-weight-medium);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: 1.25rem;
}

.form-success:empty {
  display: none;
}


/* ============================================================
   Comparison Table
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-default);
  box-shadow: var(--shadow-md);
  -webkit-overflow-scrolling: touch;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface-base);
  min-width: 600px;
}

.comparison-table thead th {
  padding: var(--space-5) var(--space-6);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  background: var(--color-surface-subtle);
  border-bottom: 2px solid var(--color-border-default);
  white-space: nowrap;
  vertical-align: middle;
}

.comparison-table thead th:first-child {
  border-radius: var(--radius-xl) 0 0 0;
}

.comparison-table thead th:last-child {
  border-radius: 0 var(--radius-xl) 0 0;
}

.comparison-table tbody td {
  padding: var(--space-4) var(--space-6);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  border-bottom: 1px solid var(--color-border-default);
  vertical-align: middle;
}

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

.comparison-table tbody tr:last-child td:first-child {
  border-radius: 0 0 0 var(--radius-xl);
}

.comparison-table tbody tr:last-child td:last-child {
  border-radius: 0 0 var(--radius-xl) 0;
}

.comparison-table tbody td:first-child {
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

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

/* boards.solutions highlight column */
/* !important required: overrides tr:hover background without specificity hacks */
.table__col--highlight {
  background: var(--color-brand-light) !important;
  border-left: 2px solid var(--color-brand-primary) !important;
  border-right: 2px solid var(--color-brand-primary) !important;
}

.comparison-table thead .table__col--highlight {
  color: var(--color-brand-primary) !important;
  font-weight: var(--font-weight-bold) !important;
  border-top: 2px solid var(--color-brand-primary) !important;
}

.comparison-table tbody tr:last-child .table__col--highlight {
  border-bottom: 2px solid var(--color-brand-primary) !important;
}

/* Check / Cross indicators */
.check {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
}

.check svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.check--positive { color: #059669; }
.check--negative { color: var(--color-error); }
.check--partial  { color: #D97706; }


/* ============================================================
   Board Widget Demo
   ============================================================ */
.board-widget-demo {
  background: var(--color-surface-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: outline var(--transition-fast);
}

.board-widget-demo__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
}

.board-widget-demo__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-default);
  flex-wrap: wrap;
  gap: var(--space-3);
}

.affiliate-notice {
  color: var(--color-text-muted);
  font-size: var(--font-size-xs);
  line-height: var(--line-height-relaxed);
  max-width: 55ch;
}

.powered-by {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-brand-primary);
  text-decoration: none;
  transition: opacity var(--transition-fast);
  flex-shrink: 0;
}

.powered-by:hover {
  opacity: 0.75;
}

.powered-by svg {
  width: 12px;
  height: 12px;
}

/* Edit mode simulation */
.board-widget-demo.is-edit-mode {
  outline: 2px dashed var(--color-border-focus);
  outline-offset: 4px;
}

.board-widget-demo.is-edit-mode .product-card {
  outline: 2px dashed var(--color-border-focus);
  outline-offset: 2px;
  position: relative;
}

.board-widget-demo.is-edit-mode .edit-tooltip {
  display: flex;
}


/* ============================================================
   Accessibility Feature Cards (2×2 grid in a11y section)
   ============================================================ */
.a11y-card {
  background: var(--color-surface-base);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base);
}

@media (prefers-reduced-motion: no-preference) {
  .a11y-card:hover {
    box-shadow: var(--shadow-md);
  }
}

.a11y-card__icon {
  width: 44px;
  height: 44px;
  background: var(--color-brand-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-4);
  color: var(--color-brand-primary);
  flex-shrink: 0;
}

.a11y-card__icon svg {
  width: 22px;
  height: 22px;
}

.a11y-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-snug);
}

.a11y-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}