/* -------------------------------------------------------------------------- */
/* Site Preferences — Notice Bar + Settings Dialog                            */
/* -------------------------------------------------------------------------- */

/* ── Button reset (Safari compatibility) ─────────────────────────────────── */
/* Prevent Safari's native "Windows 95"-style button rendering.               */

.sv-prefs-bar button,
.sv-prefs-dialog button,
.sv-footer__prefs-btn {
    -webkit-appearance: none;
    appearance: none;
    -webkit-font-smoothing: inherit;
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
    cursor: pointer;
    box-sizing: border-box;
}

/* ── Notice bar ───────────────────────────────────────────────────────────── */

.sv-prefs-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9990;
    padding: var(--sv-space-3) var(--sv-space-4);
    background: rgb(var(--color-surface-alt-rgb));
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -0.25rem 1.25rem rgba(0, 0, 0, 0.08);
    transform: translateY(100%);
    transition: transform 0.32s cubic-bezier(0.22, 1, 0.36, 1);
    will-change: transform;
}

.sv-prefs-bar--active {
    transform: translateY(0);
}

.sv-prefs-bar__inner {
    display: flex;
    align-items: center;
    gap: var(--sv-space-3);
    max-width: var(--sv-layout-max-width);
    margin-inline: auto;
    flex-wrap: wrap;
}

.sv-prefs-bar__text {
    flex: 1;
    min-width: 18rem;
}

.sv-prefs-bar__message {
    font-family: var(--sv-font-family);
    font-size: calc(0.88rem * var(--sv-ui-font-scale));
    color: rgb(var(--color-text-rgb));
    line-height: 1.5;
    margin: 0;
}

.sv-prefs-bar__link {
    color: var(--sv-link);
    text-decoration: underline;
    text-underline-offset: 0.15em;
    white-space: nowrap;
}

.sv-prefs-bar__link:hover,
.sv-prefs-bar__link:focus-visible {
    color: var(--sv-link-hover, var(--sv-link));
}

.sv-prefs-bar__actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* ── Overlay ──────────────────────────────────────────────────────────────── */

.sv-prefs-overlay {
    position: fixed;
    /* Explicit offsets for Safari < 14.1 (no `inset` shorthand) */
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sv-space-4);
    background: rgba(0, 0, 0, 0.46);
    /* Hidden state: invisible AND non-interactive */
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    will-change: opacity;
}

.sv-prefs-overlay--active {
    opacity: 1;
    pointer-events: auto;
}

/* ── Settings dialog ──────────────────────────────────────────────────────── */

.sv-prefs-dialog {
    background: rgb(var(--color-surface-alt-rgb));
    border: 1px solid var(--color-border);
    border-radius: var(--sv-radius-block);
    box-shadow:
        0 0.5rem 2rem rgba(0, 0, 0, 0.14),
        0 0 0 1px rgba(0, 0, 0, 0.04);
    width: 100%;
    max-width: 36rem;
    /* Fallback for browsers without dvh */
    max-height: calc(100vh - 4rem);
    max-height: calc(100dvh - 4rem);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    transform: scale(0.96);
    opacity: 0;
    transition:
        transform 0.22s cubic-bezier(0.22, 1, 0.36, 1),
        opacity 0.22s ease;
    will-change: transform, opacity;
}

.sv-prefs-overlay--active .sv-prefs-dialog {
    transform: scale(1);
    opacity: 1;
}

.sv-prefs-dialog__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sv-space-2);
    padding: var(--sv-space-3) var(--sv-space-4);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.sv-prefs-dialog__title {
    font-family: var(--sv-font-family-heading);
    font-size: var(--sv-h5-size);
    color: rgb(var(--color-heading-rgb));
    margin: 0;
    line-height: 1.25;
}

/* Close button — full reset + custom styles */
.sv-prefs-dialog__close {
    -webkit-appearance: none;
    appearance: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    min-width: 2rem;
    border-radius: var(--sv-radius-circle);
    border: 1px solid var(--color-border);
    background: transparent;
    color: rgb(var(--color-text-muted-rgb));
    cursor: pointer;
    flex-shrink: 0;
    padding: 0;
    transition:
        color 180ms ease,
        border-color 180ms ease,
        background-color 180ms ease;
}

.sv-prefs-dialog__close:hover {
    color: rgb(var(--color-heading-rgb));
    border-color: var(--color-heading);
    background: rgba(0, 0, 0, 0.06);
}

.sv-prefs-dialog__close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    color: rgb(var(--color-heading-rgb));
    border-color: var(--color-heading);
}

.sv-prefs-dialog__body {
    padding: var(--sv-space-3) var(--sv-space-4);
    flex: 1;
    overflow-y: auto;
}

.sv-prefs-dialog__intro {
    font-family: var(--sv-font-family);
    font-size: calc(0.88rem * var(--sv-ui-font-scale));
    color: rgb(var(--color-text-muted-rgb));
    line-height: 1.5;
    margin-bottom: var(--sv-space-3);
}

.sv-prefs-dialog__footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    padding: var(--sv-space-3) var(--sv-space-4);
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* ── Preference groups ────────────────────────────────────────────────────── */

.sv-prefs-groups {
    display: flex;
    flex-direction: column;
    gap: var(--sv-space-2);
}

.sv-prefs-group {
    padding: var(--sv-space-2) var(--sv-space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--sv-radius-md);
    background: rgb(var(--color-surface-rgb));
}

.sv-prefs-group__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--sv-space-2);
    margin-bottom: 0.35rem;
}

.sv-prefs-group__name {
    font-family: var(--sv-font-family);
    font-size: calc(0.9rem * var(--sv-ui-font-scale));
    font-weight: 600;
    color: rgb(var(--color-heading-rgb));
    line-height: 1.3;
}

.sv-prefs-group__desc {
    font-family: var(--sv-font-family);
    font-size: calc(0.82rem * var(--sv-ui-font-scale));
    color: rgb(var(--color-text-muted-rgb));
    line-height: 1.48;
    margin: 0;
}

/* ── Toggle switch ────────────────────────────────────────────────────────── */

.sv-prefs-toggle {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.sv-prefs-toggle--locked {
    cursor: default;
    pointer-events: none;
    opacity: 0.9;
}

/* Visually-hidden checkbox (accessible but invisible) */
.sv-prefs-toggle__input {
    -webkit-appearance: none;
    appearance: none;
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.sv-prefs-toggle__track {
    position: relative;
    display: inline-block;
    width: 2.4rem;
    height: 1.35rem;
    border-radius: 999px;
    border: 1px solid rgba(0, 0, 0, 0.18);
    background: rgba(0, 0, 0, 0.10);
    transition:
        background-color 180ms ease,
        border-color 180ms ease;
    box-sizing: border-box;
}

.sv-prefs-toggle__thumb {
    position: absolute;
    top: 0.175rem;
    left: 0.175rem;
    width: 0.9rem;
    height: 0.9rem;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
    transition: transform 180ms ease;
    will-change: transform;
}

/* Off state thumb color */
.sv-prefs-toggle__track .sv-prefs-toggle__thumb {
    background: rgba(255, 255, 255, 0.85);
}

/* Checked state */
.sv-prefs-toggle__input:checked + .sv-prefs-toggle__track {
    background: var(--color-heading);
    border-color: var(--color-heading);
}

.sv-prefs-toggle__input:checked + .sv-prefs-toggle__track .sv-prefs-toggle__thumb {
    transform: translateX(1.05rem);
    background: #fff;
}

/* Locked / always-on (Necessary) */
.sv-prefs-toggle--locked .sv-prefs-toggle__track {
    background: var(--color-heading);
    border-color: var(--color-heading);
}

.sv-prefs-toggle--locked .sv-prefs-toggle__thumb {
    transform: translateX(1.05rem);
    background: #fff;
}

/* Focus ring on the track when the hidden checkbox is focused */
.sv-prefs-toggle__input:focus-visible + .sv-prefs-toggle__track {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ── Footer settings link-button ──────────────────────────────────────────── */

.sv-footer__prefs-btn {
    -webkit-appearance: none;
    appearance: none;
    display: inline;
    background: none;
    border: none;
    padding: 0;
    margin: 0;
    color: rgb(var(--color-text-muted-rgb));
    font-family: var(--sv-font-family);
    font-size: calc(0.9rem * var(--sv-ui-font-scale));
    line-height: 1.35;
    cursor: pointer;
    text-decoration: underline;
    text-decoration-style: dotted;
    text-underline-offset: 0.18em;
    transition: color 180ms ease;
}

.sv-footer__prefs-btn:hover {
    color: rgb(var(--color-heading-rgb));
    text-decoration-style: solid;
}

.sv-footer__prefs-btn:focus-visible {
    color: rgb(var(--color-heading-rgb));
    text-decoration-style: solid;
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
    border-radius: var(--sv-radius-xs);
}

/* ── Mobile ───────────────────────────────────────────────────────────────── */

@media (max-width: 575.98px) {
    .sv-prefs-bar {
        padding: var(--sv-space-2) var(--sv-space-3);
    }

    .sv-prefs-bar__inner {
        flex-direction: column;
        align-items: stretch;
    }

    .sv-prefs-bar__text {
        min-width: 0;
    }

    .sv-prefs-bar__actions {
        justify-content: stretch;
    }

    .sv-prefs-bar__actions .sv-btn {
        flex: 1;
        justify-content: center;
    }

    /* Bottom sheet on mobile */
    .sv-prefs-overlay {
        align-items: flex-end;
        padding: 0;
    }

    .sv-prefs-dialog {
        max-width: 100%;
        /* Fallback without dvh */
        max-height: 90vh;
        max-height: 90dvh;
        border-bottom-left-radius: 0;
        border-bottom-right-radius: 0;
        border-bottom: none;
        transform: translateY(1.5rem);
    }

    .sv-prefs-overlay--active .sv-prefs-dialog {
        transform: translateY(0);
    }

    .sv-prefs-dialog__footer {
        justify-content: stretch;
    }

    .sv-prefs-dialog__footer .sv-btn {
        flex: 1;
        justify-content: center;
    }
}

/* ── Reduced motion ───────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
    .sv-prefs-bar,
    .sv-prefs-overlay,
    .sv-prefs-dialog,
    .sv-prefs-toggle__track,
    .sv-prefs-toggle__thumb {
        transition: none !important;
    }
}