/* ============================================================================
   primitives.css — the leaf-primitive classes (WF-13/WF-19), consolidated per
   F-R26. Roles only (SC-R01); hover/active shift surface and border tokens,
   never size or position (BTN-R01/F-R28); one radius role per component (SC-R03).
   ========================================================================== */

/* --- Button (BTN) --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    min-height: 36px;
    padding: var(--space-sm) var(--space-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-control);
    font: inherit;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--motion-fast) var(--motion-ease),
                border-color var(--motion-fast) var(--motion-ease);
}

.btn--primary {
    background-color: var(--accent);
    color: var(--accent-contrast-text);
}

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

.btn--secondary {
    background-color: transparent;
    color: var(--text-primary);
    border-color: var(--divider);
}

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

.btn--quiet {
    background-color: transparent;
    color: var(--text-secondary);
}

.btn--quiet:hover:not(:disabled) {
    background-color: var(--surface-hover);
    color: var(--text-primary);
}

.btn--icon {
    min-width: 36px;
    padding: var(--space-sm);
    background-color: transparent;
    color: var(--icon);
}

.btn--icon:hover:not(:disabled) {
    background-color: var(--surface-hover);
    color: var(--icon-active);
}

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

.btn--large {
    min-height: 44px;
    padding: var(--space-md) var(--space-xl);
}

/* Disabled binds the disabled roles — never blanket opacity (BTN-R01). */
.btn:disabled {
    background-color: var(--disabled-fill);
    color: var(--disabled-text);
    border-color: var(--disabled-border);
    cursor: not-allowed;
}

/* Busy: inline spinner, unchanged label, inert control (F-R25). */
.btn__spinner {
    width: 14px;
    height: 14px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: var(--radius-chip);
    animation: btn-spin 800ms linear infinite;
}

@keyframes btn-spin {
    to { transform: rotate(360deg); }
}

/* --- Link (LNK) --- */
.lnk--inline {
    color: var(--accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.lnk--inline:hover {
    color: var(--accent-hover);
}

.lnk--nav {
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--space-xs) 0;
}

.lnk--nav:hover {
    color: var(--text-primary);
}

/* Current page: visible marker beyond color (LNK-R01). */
.lnk--nav.lnk--current {
    color: var(--text-primary);
    border-bottom: 2px solid var(--accent);
}

.lnk--footer {
    color: var(--text-secondary);
    text-decoration: none;
}

.lnk--footer:hover {
    color: var(--text-primary);
    text-decoration: underline;
}

/* --- Chip (CHP) --- */
.chp {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 2px var(--space-md);
    border: 1px solid var(--border-hairline);
    border-radius: var(--radius-chip);
    background-color: var(--surface-raised);
    color: var(--text-secondary);
    font-size: var(--font-size--1);
    line-height: 1.5;
}

.chp--tinted {
    background-color: var(--accent-surface);
    border-color: var(--accent);
    color: var(--accent);
}

.chp--status {
    color: var(--text-primary-on-raised);
}

.chp--dense {
    padding: 0 var(--space-sm);
}

.chp--interactive {
    font: inherit;
    font-size: var(--font-size--1);
    cursor: pointer;
    transition: background-color var(--motion-fast) var(--motion-ease);
}

.chp--interactive:hover {
    background-color: var(--surface-hover);
}

/* Pressed renders beyond color: fill + leading check glyph (CHP round 6).
   The check is a typographic placeholder until the D-Q5 icon set is picked. */
.chp--pressed {
    background-color: var(--accent-surface);
    border-color: var(--accent);
    color: var(--accent);
}

.chp__check::before {
    content: "\2713";
}

.chp__remove {
    color: var(--icon);
}

/* --- PlatformGlyphSet (GLY) --- */
.gly {
    display: inline-flex;
    gap: var(--space-xs);
}

.gly__item {
    padding: 1px var(--space-sm);
    border: 1px solid var(--border-hairline);
    border-radius: var(--radius-control);
    color: var(--text-secondary);
    font-family: var(--font-numeric);
    font-size: var(--font-size--1);
}

/* --- SectionHeading (SH) --- */
.sh__eyebrow {
    color: var(--text-secondary);
    font-size: var(--font-size--1);
    letter-spacing: 0.08em;
    text-transform: uppercase; /* the Studio Flat eyebrow treatment (SC-R11's one sanctioned caps use) */
    margin-bottom: var(--label-gap);
}

.sh__lede {
    color: var(--text-secondary);
    margin-top: var(--space-sm);
}

/* --- MediaFrame (MF) --- */
.mf {
    margin: 0;
}

.mf--framed {
    background-color: var(--surface-raised);
    border: 1px solid var(--border-hairline);
    border-radius: var(--radius-container);
    padding: var(--space-sm);
}

.mf--framed img {
    border-radius: var(--radius-control);
}

.mf figcaption {
    color: var(--text-secondary);
    font-size: var(--font-size--1);
    margin-top: var(--hint-gap);
}

/* --- Inputs (FF family) --- */
.input {
    display: block;
    background-color: var(--surface-raised);
    color: var(--text-primary-on-raised);
    border: 1px solid var(--divider);
    border-radius: var(--radius-control);
    padding: var(--space-sm) var(--space-md);
    font: inherit;
    min-height: 36px;
}

.input::placeholder {
    color: var(--disabled-text);
}

.field-hint {
    color: var(--text-secondary);
}

.field-error {
    color: var(--status-danger-text);
}

/* --- Status line (StatusMessage — flash, stale-form, in-page; P2 §1) --- */
.status-msg {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid var(--status-info-border);
    border-radius: var(--radius-control);
    background-color: var(--status-info-surface);
    color: var(--status-info-text);
    max-width: var(--measure-prose);
}

.status-msg--error {
    border-color: var(--status-danger-border);
    background-color: var(--status-danger-surface);
    color: var(--status-danger-text);
}

/* --- Password show/hide (JS enhancement — absent without script, PWF) --- */
.pw-wrap {
    position: relative;
}

.pw-wrap .input {
    width: 100%;
}

.pw-toggle {
    position: absolute;
    right: var(--space-xs);
    top: 26px; /* sits inside the 36px input, under the field label */
    min-height: 28px;
    padding: 0 var(--space-sm);
    border: none;
    border-radius: var(--radius-chip);
    background: transparent;
    color: var(--text-secondary);
    font: inherit;
    font-size: var(--font-size--1);
    cursor: pointer;
}

.pw-toggle:hover {
    color: var(--text-primary);
}

/* --- OTP / short-code input (F-R27: content-sized, never full-width) --- */
/* Content-sized to the longest code the field takes (F-R27): its characters, their letter
   spacing, the side padding and the border. A 9ch box that counted none of those clipped a
   six-digit code (Jeff, 2026-10-08). --otp-chars is the field's longest code. */
.input--otp {
    --otp-chars: 8;    /* an authenticator code: six digits, room for a space or two */
    width: calc(var(--otp-chars) * (1ch + 0.12em) + 2 * var(--space-md) + 2px + 1ch);
    max-width: 100%;
    font-family: var(--font-numeric);
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.12em;
}

/* A recovery code is eleven characters with its hyphen (XXXXX-XXXXX). */
.input--otp-recovery {
    --otp-chars: 11;
}

/* The SHA primitive (P2 §2.3) — shared by the DLS rows and the /downloads kit. */
.sha {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    min-width: 0;
    color: var(--text-secondary);
    font-size: var(--font-size--1);
}

.sha__value {
    overflow-wrap: anywhere;
}

.sha__copy {
    min-height: 24px;
    padding: 0 var(--space-sm);
    font-size: var(--font-size--1);
}

.sha__copy[hidden] {
    display: none;
}

/* MDV (P3 §2.1) — generated markup only; spacing stays calm inside whatever
   surface embeds it (release notes, known issues, install guides). */
.mdv > * + * {
    margin-block-start: var(--space-sm);
}

.mdv ul,
.mdv ol {
    padding-inline-start: 1.25rem;
}

.mdv pre {
    overflow-x: auto;
    padding: var(--space-sm) var(--space-md);
    background: var(--surface-raised);
}

.mdv hr {
    border: 0;
    border-block-start: 1px solid var(--border-hairline);
}

.mdv a.mdv-external::after {
    content: " ↗";
}