/* GiperLink UI kit — tokens + primitives.
 * Load BEFORE app.css. Existing screens keep working; new UI should use ui-*.
 * See docs/ui-kit.md
 */

:root {
  /* Color */
  --color-text: #101828;
  --color-text-secondary: #344054;
  --color-text-muted: #667085;
  --color-text-subtle: #98a2b3;
  --color-border: #d0d5dd;
  --color-border-subtle: #e4e7ec;
  --color-bg: #f7f8fb;
  --color-surface: #ffffff;
  --color-surface-muted: #f9fafb;
  --color-surface-hover: #f2f4f7;
  --color-danger: #d92d20;
  --color-danger-strong: #b42318;
  --color-danger-border: #fda29b;
  --color-success: #027a48;
  --color-success-bg: #ecfdf3;
  --color-success-soft: #d1fadf;
  --color-success-border: #6ce9a6;
  --color-neutral-soft: #eaecf0;
  --color-neutral-strong: #475467;
  --color-accent: #7843ff;
  --color-overlay: rgba(16, 24, 40, 0.45);

  /* Typography */
  --font-body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-heading: "Jost", "Futura", Inter, ui-sans-serif, system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --font-brand-link: "SUSE", Inter, ui-sans-serif, system-ui, sans-serif;

  /* Space scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  /* Radius */
  --radius-sm: 12px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-pill: 999px;

  /* Control sizes */
  --control-h-sm: 42px;
  --control-h-md: 48px;

  /* Shadow */
  --shadow-menu: 0 12px 32px rgba(16, 24, 40, 0.12);
  --shadow-modal: 0 24px 80px rgba(16, 24, 40, 0.24);

  /* Compat aliases used while migrating app.css */
  color-scheme: light;
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
}

/* ---------- Layout helpers ---------- */

.ui-stack {
  display: grid;
  gap: var(--space-3);
}

.ui-stack--sm { gap: var(--space-2); }
.ui-stack--md { gap: var(--space-4); }
.ui-stack--lg { gap: var(--space-5); }

.ui-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.ui-row--md { gap: var(--space-3); }

/* ---------- Button ---------- */

.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--control-h-md);
  padding: 14px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: var(--color-text);
  color: #fff;
  font: inherit;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.ui-btn:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

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

.ui-btn--danger {
  background: var(--color-surface);
  border-color: var(--color-danger-border);
  color: var(--color-danger-strong);
}

.ui-btn--sm {
  min-height: var(--control-h-sm);
  padding: 10px 14px;
  font-weight: 700;
}

/* ---------- Icon button ---------- */

.ui-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: var(--control-h-sm);
  height: var(--control-h-sm);
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

.ui-icon-btn:hover {
  background: var(--color-surface-muted);
  border-color: var(--color-text-subtle);
}

.ui-icon-btn--danger:hover {
  border-color: var(--color-danger-border);
  color: var(--color-danger-strong);
}

.ui-icon-btn .gl-icon {
  width: 20px;
  height: 20px;
}

.ui-icon-btn.is-copied {
  border-color: var(--color-success-border);
  color: var(--color-success);
  background: var(--color-success-bg);
}

/* ---------- Input ---------- */

.ui-input {
  width: 100%;
  min-height: var(--control-h-md);
  padding: 0 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font: inherit;
  font-size: 15px;
}

.ui-input:focus {
  outline: 2px solid var(--color-text);
  outline-offset: 1px;
}

.ui-input:disabled,
.ui-input[readonly] {
  cursor: default;
}

.ui-input--mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- Field (label + control + error) ---------- */

.ui-field {
  display: grid;
  gap: var(--space-2);
  min-width: 0;
}

.ui-field__label {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 14px;
  font-weight: 700;
}

.ui-field__hint {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 14px;
  line-height: 1.45;
}

.ui-field__error {
  margin: 0;
  color: var(--color-danger);
  font-size: 13px;
  font-weight: 500;
  line-height: 1.35;
}

.ui-field__error[hidden] {
  display: none !important;
}

.ui-field__control {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: stretch;
  min-width: 0;
}

.ui-field__control > .ui-input {
  flex: 1 1 200px;
}

.ui-field__control > .ui-btn {
  flex: 0 0 auto;
}

/* ---------- Chip ---------- */

.ui-chip {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  max-width: 100%;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.2;
  background: var(--color-surface-hover);
  color: var(--color-text-muted);
}

.ui-chip--published {
  background: var(--color-success-soft);
  color: var(--color-success);
}

.ui-chip--draft {
  background: var(--color-neutral-soft);
  color: var(--color-neutral-strong);
}

.ui-input--wide {
  width: 100%;
}

.ui-icon-btn--lg {
  width: var(--control-h-md);
  height: var(--control-h-md);
  border-radius: var(--radius-md);
}

/* ---------- Tabs ---------- */

.ui-tabs {
  display: inline-flex;
  gap: var(--space-2);
  padding: var(--space-1);
  border-radius: var(--radius-pill);
  background: var(--color-surface-hover);
}

.ui-tabs__tab {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 14px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text-muted);
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.ui-tabs__tab:hover {
  color: var(--color-text);
}

.ui-tabs__tab.is-active {
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

/* ---------- Menu ---------- */

.ui-menu {
  position: relative;
  flex-shrink: 0;
}

.ui-menu__dropdown {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 40;
  min-width: 220px;
  padding: 6px;
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: var(--shadow-menu);
}

.ui-menu__item {
  display: block;
  width: 100%;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--color-text);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
}

.ui-menu__item:hover {
  background: var(--color-surface-hover);
}

/* ---------- Modal (same contract as wizard-modal) ---------- */

.ui-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--space-5);
  background: var(--color-overlay);
}

.ui-modal-backdrop.is-open {
  display: flex;
}

.ui-modal {
  width: min(560px, 100%);
  max-height: calc(100vh - 48px);
  overflow: auto;
  padding: 28px;
  border-radius: var(--radius-xl);
  background: var(--color-surface);
  box-shadow: var(--shadow-modal);
}

.ui-modal--wide {
  width: min(720px, 100%);
}

.ui-modal__header {
  display: grid;
  gap: var(--space-4);
}

.ui-modal__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.ui-modal__top .eyebrow {
  margin: 0;
  margin-right: auto;
}

.ui-modal__close {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--color-text);
  cursor: pointer;
  flex-shrink: 0;
}

.ui-modal__close:hover {
  background: var(--color-surface-hover);
}

.ui-modal h2 {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(24px, 4vw, 32px);
  line-height: 1.15;
}

.ui-modal__body {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.ui-modal__lead {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 15px;
  line-height: 1.45;
}