/**
 * GS_AccountForm / gs-account-form — Unified CUBE CSS.
 * Canonical styles for Account Profile, 2-Tab Auth & Role Selector.
 * STRICTLY NO VAR FALLBACKS, NO HEX COLORS, 100% CANONICAL OKLCH TOKENS.
 */

@layer components {
  /* ── Base Container ── */
  .gs-accountform,
  .gs-account-form {
    --local-color: var(--canvas-on);
    --local-color-muted: var(--canvas-on-muted);
    --local-intent-color: var(--brand);
    --local-focus-ring: color-mix(in oklch, var(--brand) 35%, transparent);
    --local-border: color-mix(in oklch, var(--canvas-on) 14%, transparent);
    --local-bg: var(--surface);
    --local-input-bg: color-mix(in oklch, var(--canvas-on) 6%, var(--surface));
    --local-input-color: var(--canvas-on);

    display: block;
    width: 100%;
    max-width: 44rem;
    box-sizing: border-box;
    isolation: isolate;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-family: var(--font-sans);
    color: var(--local-color);
    background-color: var(--local-bg);
    border: var(--border-width-sm) solid var(--local-border);
    box-shadow: inset 0 0.0625rem 0 0 color-mix(in oklch, var(--canvas-on) 12%, transparent),
                var(--gs-elevation-2);
    transition: background-color var(--motion), border-color var(--motion);
  }

  /* ── Title ── */
  .gs-accountform__title,
  .gs-af-title {
    margin-top: 0;
    margin-bottom: var(--space-md);
    font-family: var(--font-mono);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-lg);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--local-color);
  }

  /* ── Tab Navigation Bar ── */
  .gs-accountform__tabs {
    display: flex;
    gap: 0;
    border-bottom: var(--border-width-sm) solid var(--local-border);
    margin-bottom: var(--space-md);
  }

  .gs-accountform__tab {
    flex: 1;
    padding: var(--space-xs) var(--space-sm);
    background: transparent;
    border: none;
    border-bottom: 0.125rem solid transparent;
    color: var(--local-color-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-lg);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    cursor: pointer;
    text-align: center;
    transition: color var(--motion), border-color var(--motion);
  }

  .gs-accountform__tab:hover {
    color: var(--local-color);
  }

  .gs-accountform__tab.is-active,
  .gs-accountform__tab[aria-selected="true"] {
    color: var(--local-intent-color);
    border-bottom-color: var(--local-intent-color);
  }

  .gs-accountform__tab:focus-visible {
    outline: 0.125rem solid var(--local-intent-color);
    outline-offset: -0.125rem;
    border-radius: var(--radius-xs);
  }

  /* ── Panels ── */
  .gs-accountform__panel {
    display: none;
  }

  .gs-accountform__panel.is-active,
  .gs-accountform__panel:not([hidden]) {
    display: block;
  }

  /* ── Role Selector Grid ── */
  .gs-accountform__role-selector {
    border: none;
    padding: 0;
    margin: 0 0 var(--space-md) 0;
  }

  .gs-accountform__role-selector legend {
    display: block;
    color: var(--local-color-muted);
    font-family: var(--font-mono);
    font-weight: var(--font-weight-lg);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2xs);
  }

  .gs-accountform__role-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xs);
  }

  .gs-accountform__role-card {
    display: flex;
    flex-direction: column;
    padding: var(--space-xs) var(--space-sm);
    background-color: var(--local-input-bg);
    border: var(--border-width-sm) solid var(--local-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    position: relative;
    transition: border-color var(--motion), background-color var(--motion);
  }

  .gs-accountform__role-card input[type="radio"] {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    accent-color: var(--local-intent-color);
  }

  .gs-accountform__role-card:hover {
    border-color: color-mix(in oklch, var(--local-intent-color) 60%, transparent);
  }

  .gs-accountform__role-card.is-selected {
    border-color: var(--local-intent-color);
    background-color: color-mix(in oklch, var(--local-intent-color) 12%, var(--local-bg));
  }

  .gs-accountform__role-icon {
    width: 1.5rem;
    height: 1.5rem;
    margin-bottom: var(--space-2xs);
    color: var(--local-intent-color);
  }

  .gs-accountform__role-label {
    font-family: var(--font-mono);
    font-weight: var(--font-weight-lg);
    font-size: var(--font-size-xs);
    color: var(--local-color);
  }

  .gs-accountform__role-desc {
    font-size: 0.75rem;
    color: var(--local-color-muted);
    margin-top: 0.125rem;
    line-height: 1.3;
  }

  /* ── Form Layout ── */
  .gs-accountform__form,
  .gs-af-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
  }

  .gs-accountform__form[hidden] {
    display: none !important;
  }

  .gs-accountform__field,
  .gs-af-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2xs);
  }

  .gs-accountform__field-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .gs-accountform__forgot {
    background: none;
    border: none;
    padding: 0;
    color: var(--local-intent-color);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    cursor: pointer;
    text-decoration: underline;
    transition: opacity var(--motion);
  }

  .gs-accountform__forgot:hover {
    opacity: 0.85;
  }

  .gs-accountform__forgot-text {
    font-size: var(--font-size-sm);
    color: var(--local-color-muted);
    margin: 0 0 var(--space-xs) 0;
  }

  .gs-accountform__back-link {
    background: none;
    border: none;
    padding: var(--space-2xs) 0;
    color: var(--local-color-muted);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-top: var(--space-2xs);
    transition: color var(--motion);
  }

  .gs-accountform__back-link:hover {
    color: var(--local-color);
  }

  /* ── Labels ── */
  .gs-accountform__field label,
  .gs-af-field label {
    display: block;
    color: var(--local-color-muted);
    font-family: var(--font-mono);
    font-weight: var(--font-weight-lg);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .gs-af-required {
    color: var(--accent);
    margin-left: 0.125rem;
  }

  /* ── Form Inputs & Textareas ── */
  .gs-accountform__field input[type="text"],
  .gs-accountform__field input[type="email"],
  .gs-accountform__field input[type="tel"],
  .gs-accountform__field input[type="password"],
  .gs-accountform__field textarea,
  .gs-account-form .gs-af-input,
  .gs-account-form .gs-af-textarea {
    display: block;
    width: 100%;
    box-sizing: border-box;
    min-height: 2.75rem;
    background-color: var(--local-input-bg);
    border: var(--border-width-sm) solid var(--local-border);
    border-radius: var(--radius-sm);
    color: var(--local-input-color);
    padding: var(--space-xs) var(--space-sm);
    font-family: var(--font-sans);
    font-size: var(--font-size-sm);
    transition: border-color var(--motion), box-shadow var(--motion), background-color var(--motion);
  }

  .gs-accountform__field textarea,
  .gs-account-form .gs-af-textarea {
    min-height: 5.5rem;
    resize: vertical;
  }

  .gs-accountform__field input::placeholder,
  .gs-accountform__field textarea::placeholder,
  .gs-account-form .gs-af-input::placeholder,
  .gs-account-form .gs-af-textarea::placeholder {
    color: color-mix(in oklch, var(--local-color-muted) 70%, transparent);
  }

  .gs-accountform__field input:focus-visible,
  .gs-accountform__field textarea:focus-visible,
  .gs-account-form .gs-af-input:focus-visible,
  .gs-account-form .gs-af-textarea:focus-visible {
    outline: none;
    border-color: var(--local-intent-color);
    box-shadow: 0 0 0 0.1875rem var(--local-focus-ring);
    background-color: color-mix(in oklch, var(--canvas-on) 10%, var(--surface));
  }

  /* ── Submit Row & Button ── */
  .gs-accountform__actions,
  .gs-af-submit-row {
    margin-top: var(--space-xs);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2xs);
  }

  .gs-accountform__submit,
  .gs-af-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    gap: var(--space-xs);
    background-color: var(--local-intent-color);
    background-image: linear-gradient(180deg, color-mix(in oklch, var(--white) 18%, transparent) 0%, transparent 100%);
    border: var(--border-width-sm) solid color-mix(in oklch, var(--white) 25%, transparent);
    color: var(--brand-on);
    border-radius: var(--radius-sm);
    padding: var(--space-xs) var(--space-md);
    font-weight: var(--font-weight-lg);
    font-family: var(--font-mono);
    font-size: var(--font-size-xs);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
    min-height: 2.75rem;
    box-shadow: inset 0 0.0625rem 0 0 color-mix(in oklch, var(--white) 35%, transparent),
                0 0.125rem 0.375rem oklch(0% 0 0 / 0.25);
    transition: transform var(--motion), box-shadow var(--motion), filter var(--motion);
  }

  .gs-accountform__submit:hover,
  .gs-af-submit:hover {
    transform: translateY(-0.0625rem);
    filter: brightness(1.08);
    box-shadow: inset 0 0.0625rem 0 0 color-mix(in oklch, var(--white) 50%, transparent),
                0 0.25rem 0.5rem oklch(0% 0 0 / 0.35);
  }

  .gs-accountform__submit:active,
  .gs-af-submit:active {
    transform: translateY(0) scale(0.99);
  }

  .gs-accountform__submit:focus-visible,
  .gs-af-submit:focus-visible {
    outline: 0.1875rem solid var(--local-intent-color);
    outline-offset: 0.125rem;
  }

  /* ── Status Feedback ── */
  .gs-accountform__feedback,
  .gs-af-status {
    margin-bottom: var(--space-2xs);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
    transition: opacity var(--motion);
  }

  .gs-accountform__feedback:empty,
  .gs-af-status:empty {
    display: none;
  }

  .gs-accountform__feedback[data-state="error"],
  .gs-af-status[data-state="error"] {
    color: var(--accent);
    background: color-mix(in oklch, var(--accent) 12%, transparent);
    border: var(--border-width-sm) solid color-mix(in oklch, var(--accent) 30%, transparent);
    padding: var(--space-xs) var(--space-sm);
  }

  .gs-accountform__feedback[data-state="success"],
  .gs-af-status[data-state="success"] {
    color: var(--brand);
    background: color-mix(in oklch, var(--brand) 12%, transparent);
    border: var(--border-width-sm) solid color-mix(in oklch, var(--brand) 30%, transparent);
    padding: var(--space-xs) var(--space-sm);
  }

  /* ── Intent Spectrum ── */
  .gs-accountform[data-intent="surface"],
  .gs-account-form[data-intent="surface"] {
    --local-bg: var(--surface);
    --local-border: color-mix(in oklch, var(--canvas-on) 14%, transparent);
    --local-color: var(--canvas-on);
    --local-color-muted: var(--canvas-on-muted);
    --local-intent-color: var(--brand);
  }

  .gs-accountform[data-intent="canvas"],
  .gs-account-form[data-intent="canvas"] {
    --local-bg: var(--canvas-2);
    --local-border: color-mix(in oklch, var(--canvas-on) 10%, transparent);
    --local-color: var(--canvas-on);
    --local-color-muted: var(--canvas-on-muted);
    --local-intent-color: var(--brand);
  }

  .gs-accountform[data-intent="brand"],
  .gs-account-form[data-intent="brand"] {
    --local-bg: color-mix(in oklch, var(--brand) 22%, var(--canvas));
    --local-border: color-mix(in oklch, var(--brand) 55%, transparent);
    --local-color: var(--canvas-on);
    --local-color-muted: color-mix(in oklch, var(--canvas-on) 80%, transparent);
    --local-intent-color: var(--brand);
    box-shadow: inset 0 0.0625rem 0 0 color-mix(in oklch, 0 0.5rem 1.25rem oklch(0% 0 0 / 0.4), 0 0.5rem 1.25rem oklch(0% 0 0 / 0.4)), 0 0.25rem 1rem oklch(0% 0 0 / 0.3);
  }

  .gs-accountform[data-intent="accent"],
  .gs-account-form[data-intent="accent"] {
    --local-bg: color-mix(in oklch, var(--accent) 20%, var(--canvas));
    --local-border: color-mix(in oklch, var(--accent) 55%, transparent);
    --local-color: var(--canvas-on);
    --local-color-muted: color-mix(in oklch, var(--canvas-on) 80%, transparent);
    --local-intent-color: var(--accent);
    box-shadow: inset 0 0.0625rem 0 0 color-mix(in oklch, 0 0.5rem 1.25rem oklch(0% 0 0 / 0.4), 0 0.5rem 1.25rem oklch(0% 0 0 / 0.4)), 0 0.25rem 1rem oklch(0% 0 0 / 0.3);
  }

  .gs-accountform[data-intent="inverse"],
  .gs-account-form[data-intent="inverse"] {
    --local-bg: var(--light);
    --local-color: var(--ink);
    --local-color-muted: color-mix(in oklch, var(--ink) 75%, transparent);
    --local-border: color-mix(in oklch, var(--ink) 22%, transparent);
    --local-input-bg: var(--white);
    --local-input-color: var(--ink);
    --local-intent-color: oklch(42% 0.15 245);
    --local-focus-ring: color-mix(in oklch, oklch(42% 0.15 245) 30%, transparent);
  }

  .gs-accountform[data-intent="inverse"] .gs-accountform__forgot,
  .gs-accountform[data-intent="inverse"] .gs-af-forgot {
    color: oklch(38% 0.16 245) !important;
    font-weight: 600;
  }

  .gs-accountform[data-intent="inverse"] .gs-accountform__submit,
  .gs-account-form[data-intent="inverse"] .gs-af-submit {
    background-color: oklch(42% 0.15 245) !important;
    color: var(--white) !important;
    border-color: oklch(35% 0.15 245) !important;
  }
}