/**
 * Scene Sentences — widget styles.
 *
 * Sits INSIDE the fleet UniversalContainer card (navy-gray field, blue instruction banner
 * on top, footer at the bottom; the card is outline-only here — Lyda 09-18).
 * This file styles only the exercise content, matching Sentence Builder / Articles:
 *   - the picture (which IS the audio button) as a white card
 *   - the sentence on a white card; blanks are plain UNDERLINES ("____"), the active one
 *     blue, a wrong try pale red, a filled one green with the word on it
 *   - word / phrase tiles: white cards with a 2px neutral edge and soft shadow in a
 *     light pool, blue on hover — unmistakably "tap one of these"
 *   - typing rows, the cue strip, the parts checklist and the self-check
 *
 * STATIC FRAME (§7.1): fixed minimum sizes on picture / sentence / feedback slots. Tiles
 * are keyed per item (§6.6) and state swaps never animate. No !important.
 */

.scene-sentences-root {
    font-family: var(--as-font, inherit);
    color: var(--as-text, #1f2937);
}

.scene-sentences-root .ss-loading,
.scene-sentences-root .ss-error,
.scene-sentences-root .ss-empty { padding: 32px 16px; text-align: center; }
.scene-sentences-root .ss-empty-sub { color: #6b7280; }

.scene-sentences-root .ss-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

/* ---- frame (inside the container card) ---------------------------------------- */

.scene-sentences-root .ss-body {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    min-height: 520px;
    padding: 4px 4px 8px;
}
.scene-sentences-root .ss-body--complete { min-height: 0; }
.scene-sentences-root .ss-instruction { margin: 0; text-align: center; color: var(--as-field-instruction, #1e40af); }
/* Lyda 09-18: the fleet card is OUTLINE only here — white inside, keep the edge. */
.scene-sentences-root .uf-container { background: #fff; }

/* ---- target dropdown (function words: one thing at a time) ------------------- */

.scene-sentences-root .ss-kind-select-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.scene-sentences-root .ss-kind-select-label {
    font-size: 0.95rem;
    font-weight: 600;
    color: #4b5563;
}
.scene-sentences-root .ss-kind-select {
    min-height: 44px;
    padding: 6px 36px 6px 14px;
    border: 2px solid #d1d5db;
    border-radius: 999px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    color: #1d4ed8;
    font: inherit;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
}
.scene-sentences-root .ss-kind-select:hover,
.scene-sentences-root .ss-kind-select:focus { border-color: var(--as-read-accent, #2563eb); }
.scene-sentences-root .ss-kind-select:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }

/* ---- target chips (fill in the blanks: several at once) ---------------------------------------------------- */

.scene-sentences-root .ss-kinds {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}
.scene-sentences-root .ss-kind {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    min-height: 44px;
    padding: 6px 14px;
    border: 2px solid #d1d5db;
    border-radius: 999px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    color: #6b7280;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: none;
    cursor: pointer;
}
.scene-sentences-root .ss-kind:hover,
.scene-sentences-root .ss-kind:focus { background: #fff; color: #6b7280; border-color: var(--as-read-accent, #2563eb); }
.scene-sentences-root .ss-kind--on,
.scene-sentences-root .ss-kind--on:hover,
.scene-sentences-root .ss-kind--on:focus {
    background: var(--as-read-bg, #eff6ff);
    border-color: var(--as-read-accent, #2563eb);
    color: #1d4ed8;
}
.scene-sentences-root .ss-kind:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-kind-check { display: inline-block; width: 1em; text-align: center; }

/* ---- picture = the audio button ------------------------------------------------------ */

.scene-sentences-root .ss-stimulus {
    width: 100%;
    max-width: 240px;
    aspect-ratio: 1 / 1;
}
.scene-sentences-root .ss-picture {
    display: block;
    width: 100%;
    height: 100%;
    padding: 0;
    border: 2px solid #d1d5db;
    border-radius: 14px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    cursor: pointer;
}
.scene-sentences-root .ss-picture--silent { cursor: default; }
.scene-sentences-root .ss-picture img { display: block; width: 100%; height: 100%; object-fit: cover; }
.scene-sentences-root .ss-picture:hover,
.scene-sentences-root .ss-picture:focus { background: #fff; border-color: var(--as-read-accent, #2563eb); }
.scene-sentences-root .ss-picture--silent:hover,
.scene-sentences-root .ss-picture--silent:focus { border-color: #d1d5db; }
.scene-sentences-root .ss-picture:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-picture--speaking,
.scene-sentences-root .ss-picture--speaking:hover,
.scene-sentences-root .ss-picture--speaking:focus {
    border-color: var(--as-read-accent, #2563eb);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.25);
}

/* ---- sentence card + underline blanks ------------------------------------------------- */

.scene-sentences-root .ss-sentence-slot {
    width: 100%;
    max-width: 640px;
    min-height: 4.6em;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 16px;
    border: 2px solid #d1d5db;
    border-radius: 12px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.scene-sentences-root .ss-sentence {
    margin: 0;
    text-align: center;
    font-size: 1.35rem;
    line-height: 2;
    color: var(--as-text, #1f2937);
}
.scene-sentences-root .ss-blank-wrap { white-space: nowrap; }
/* a blank is just a line: ____ */
.scene-sentences-root .ss-blank {
    display: inline-block;
    min-width: 2.6em;
    height: 1.15em;
    margin: 0 3px;
    padding: 0 6px;
    border-bottom: 3px solid #9ca3af;
    line-height: 1.15;
    text-align: center;
    vertical-align: baseline;
    color: var(--as-text, #1f2937);
}
.scene-sentences-root .ss-blank--open { border-bottom-color: var(--as-read-accent, #2563eb); background: var(--as-read-bg, #eff6ff); border-radius: 4px 4px 0 0; }
.scene-sentences-root .ss-blank--notyet { border-bottom-color: #f87171; }
.scene-sentences-root .ss-blank--filled {
    height: auto;
    border-bottom-color: var(--as-success, #15803d);
    color: var(--as-success, #15803d);
    font-weight: 700;
}
.scene-sentences-root .ss-blank--part {
    height: auto;
    min-width: 0;
    padding: 0 10px;
    font-size: 1rem;
    font-weight: 600;
    color: #1d4ed8;
}
.scene-sentences-root .ss-blank--input { border: 0; padding: 0; min-width: 0; height: auto; background: none; }
.scene-sentences-root .ss-blank-field {
    width: auto;
    min-height: 44px;
    padding: 4px 8px;
    border: 2px solid #d1d5db;
    border-bottom: 3px solid var(--as-read-accent, #2563eb);
    border-radius: 8px 8px 0 0;
    background: #fff;
    color: var(--as-text, #1f2937);
    font: inherit;
    font-size: 1.15rem;
    text-align: center;
}
.scene-sentences-root .ss-blank-field--notyet { border-bottom-color: #f87171; }
.scene-sentences-root .ss-blank-field:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }

/* ---- tiles: white cards in a light pool (Sentence Builder idiom) -------------------------- */

.scene-sentences-root .ss-tiles {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    width: 100%;
    max-width: 640px;
    min-height: 68px;
    padding: 10px 12px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.55);
}
.scene-sentences-root .ss-tile {
    min-width: 60px;
    min-height: 50px;
    padding: 10px 18px;
    border: 2px solid #d1d5db;
    border-radius: 10px;
    background: #fff;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
    color: var(--as-text, #1f2937);
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.3;
    text-transform: none;
    white-space: normal;
    cursor: pointer;
    transition: none;
}
.scene-sentences-root .ss-tile--phrase { font-size: 1.05rem; }
.scene-sentences-root .ss-tile:hover,
.scene-sentences-root .ss-tile:focus {
    background: var(--as-read-bg, #eff6ff);
    border-color: var(--as-read-accent, #2563eb);
    color: #1d4ed8;
}
.scene-sentences-root .ss-tile:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-tile:active { transform: translateY(1px); }
.scene-sentences-root .ss-tile:disabled { cursor: default; transform: none; }
.scene-sentences-root .ss-tile--correct,
.scene-sentences-root .ss-tile--correct:hover,
.scene-sentences-root .ss-tile--correct:focus,
.scene-sentences-root .ss-tile--correct:disabled { background: var(--as-primary-bg, #15803d); border-color: var(--as-primary-bg, #15803d); color: #fff; opacity: 1; }
.scene-sentences-root .ss-tile--notyet,
.scene-sentences-root .ss-tile--notyet:hover,
.scene-sentences-root .ss-tile--notyet:focus,
.scene-sentences-root .ss-tile--notyet:disabled { background: #f9fafb; border-color: #fca5a5; color: #6b7280; opacity: 1; }
.scene-sentences-root .ss-tile--out,
.scene-sentences-root .ss-tile--out:hover,
.scene-sentences-root .ss-tile--out:focus,
.scene-sentences-root .ss-tile--out:disabled { background: #f9fafb; border-style: dashed; color: #9ca3af; box-shadow: none; opacity: 0.7; }
.scene-sentences-root .ss-tile--rest,
.scene-sentences-root .ss-tile--rest:disabled { color: #6b7280; opacity: 0.8; }
.scene-sentences-root .ss-tile--glow,
.scene-sentences-root .ss-tile--glow:hover,
.scene-sentences-root .ss-tile--glow:focus { border-color: var(--as-success, #15803d); box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.3); }
.scene-sentences-root .ss-tile--used,
.scene-sentences-root .ss-tile--used:disabled { opacity: 0.25; box-shadow: none; }
.scene-sentences-root .ss-tile--placed { min-height: 44px; padding: 6px 12px; font-size: 1.05rem; }

/* ---- arrange row (practice saying it, L1) --------------------------------------------------------- */

.scene-sentences-root .ss-arrange-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    max-width: 640px;
    min-height: 66px;
    padding: 8px;
    border: 2px solid var(--as-choice-edge, #86efac);
    border-radius: 12px;
    background: var(--as-action-bg, #ecfdf5);
}
.scene-sentences-root .ss-arrange-empty { color: var(--as-action-text, #047857); font-size: 0.95rem; }

/* ---- typing ---------------------------------------------------------------------------------- */

.scene-sentences-root .ss-typed-row {
    display: flex;
    flex-wrap: wrap;
    align-items: stretch;
    justify-content: center;
    gap: 8px;
    width: 100%;
    max-width: 640px;
}
.scene-sentences-root .ss-input {
    flex: 1 1 200px;
    min-height: 52px;
    padding: 8px 14px;
    border: 2px solid #d1d5db;
    border-bottom: 3px solid var(--as-read-accent, #2563eb);
    border-radius: 10px;
    background: #fff;
    color: var(--as-text, #1f2937);
    font: inherit;
    font-size: 1.15rem;
}
.scene-sentences-root .ss-input--sentence { flex-basis: 100%; }
.scene-sentences-root .ss-input:disabled { background: #f9fafb; color: #6b7280; }
.scene-sentences-root .ss-input:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }

.scene-sentences-root .ss-check {
    min-height: 52px;
    padding: 10px 28px;
    border: 0;
    border-radius: 999px;
    background: var(--as-primary-bg, #15803d);
    color: var(--as-primary-text, #fff);
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: none;
    cursor: pointer;
}
.scene-sentences-root .ss-check:hover,
.scene-sentences-root .ss-check:focus { background: #166534; color: #fff; }
.scene-sentences-root .ss-check:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-check:disabled { opacity: 0.5; cursor: default; }

.scene-sentences-root .ss-mic {
    width: 56px;
    min-height: 52px;
    padding: 0;
    border: 2px solid #d1d5db;
    border-radius: 10px;
    background: #fff;
    color: var(--as-text, #1f2937);
    font-size: 1.3rem;
    cursor: pointer;
}
.scene-sentences-root .ss-mic:hover,
.scene-sentences-root .ss-mic:focus { background: var(--as-read-bg, #eff6ff); border-color: var(--as-read-accent, #2563eb); color: #1d4ed8; }
.scene-sentences-root .ss-mic--on,
.scene-sentences-root .ss-mic--on:hover,
.scene-sentences-root .ss-mic--on:focus { background: var(--as-danger-bg, #fef2f2); border-color: #dc2626; color: #dc2626; }
.scene-sentences-root .ss-mic:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-heard { margin: 0; text-align: center; font-size: 0.95rem; color: #6b7280; }

/* ---- supports + cue strip ------------------------------------------------------------------------- */

.scene-sentences-root .ss-support {
    width: 100%;
    max-width: 640px;
    margin: 0;
    padding: 10px 16px;
    border: 2px solid #d1d5db;
    border-radius: 12px;
    background: #fff;
    text-align: center;
    font-size: 1.15rem;
    line-height: 1.6;
}
.scene-sentences-root .ss-support--letters { font-family: var(--as-font-mono, ui-monospace, monospace); letter-spacing: 0.04em; }

.scene-sentences-root .ss-cue-strip { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.scene-sentences-root .ss-cue {
    padding: 4px 12px;
    border: 1.5px solid #cbd5e1;
    border-radius: 999px;
    background: #fff;
    font-size: 0.9rem;
    font-weight: 600;
    color: #64748b;
}
.scene-sentences-root .ss-cue--hit { border-color: var(--as-success, #15803d); background: var(--as-success-bg, #f0fdf4); color: var(--as-success, #15803d); }
.scene-sentences-root .ss-cue--miss { border-color: #fca5a5; }

/* ---- checklist + self-check ------------------------------------------------------------------------- */

.scene-sentences-root .ss-checklist {
    width: 100%;
    max-width: 360px;
    padding: 8px 14px;
    border: 2px solid #d1d5db;
    border-radius: 12px;
    background: #fff;
}
.scene-sentences-root .ss-check-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid #eef0f2;
    font-size: 1rem;
}
.scene-sentences-root .ss-check-row:last-of-type { border-bottom: 0; }
.scene-sentences-root .ss-check-ok { color: var(--as-success, #15803d); font-weight: 700; }
.scene-sentences-root .ss-check-notyet { color: #6b7280; }
.scene-sentences-root .ss-nudge { margin: 8px 0 0; text-align: center; font-size: 0.95rem; color: var(--as-field-instruction, #1e40af); }

.scene-sentences-root .ss-self {
    width: 100%;
    max-width: 360px;
    padding: 10px 12px;
    border: 2px dashed #cbd5e1;
    border-radius: 12px;
    background: #fff;
    text-align: center;
}
.scene-sentences-root .ss-self-q { margin: 0 0 8px; font-weight: 600; }
.scene-sentences-root .ss-self-row { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
.scene-sentences-root .ss-self-btn {
    min-height: 44px;
    padding: 6px 16px;
    border: 2px solid #d1d5db;
    border-radius: 999px;
    background: #fff;
    color: var(--as-text, #1f2937);
    font-size: 0.95rem;
    text-transform: none;
    cursor: pointer;
}
.scene-sentences-root .ss-self-btn:hover,
.scene-sentences-root .ss-self-btn:focus { background: #fff; color: var(--as-text, #1f2937); border-color: var(--as-read-accent, #2563eb); }
.scene-sentences-root .ss-self-btn--on,
.scene-sentences-root .ss-self-btn--on:disabled { background: var(--as-read-bg, #eff6ff); border-color: var(--as-read-accent, #2563eb); color: #1d4ed8; opacity: 1; }
.scene-sentences-root .ss-self-btn:focus-visible { outline: 3px solid var(--as-read-accent, #2563eb); outline-offset: 2px; }
.scene-sentences-root .ss-self-note { margin: 8px 0 0; font-size: 0.85rem; color: #6b7280; }

/* ---- feedback slot ------------------------------------------------------------------------------------- */

.scene-sentences-root .ss-feedback-slot {
    min-height: 2.4em;
    display: flex;
    align-items: center;
    justify-content: center;
}
.scene-sentences-root .ss-feedback {
    padding: 4px 16px;
    border-radius: 999px;
    background: #fff;
    font-size: 1.05rem;
    font-weight: 600;
}
.scene-sentences-root .ss-feedback--ok { background: var(--as-success-bg, #f0fdf4); color: var(--as-success, #15803d); }

.scene-sentences-root .ss-preview-note {
    padding: 24px;
    border: 2px dashed #d1d5db;
    border-radius: 12px;
    text-align: center;
    color: #6b7280;
}

@media (min-width: 768px) {
    .scene-sentences-root .ss-body { gap: 14px; }
    .scene-sentences-root .ss-stimulus { max-width: 260px; }
}
@media (max-width: 380px) {
    .scene-sentences-root .ss-stimulus { max-width: 200px; }
    .scene-sentences-root .ss-sentence { font-size: 1.15rem; }
    .scene-sentences-root .ss-tile { font-size: 1.05rem; padding: 8px 14px; }
}
@media (prefers-reduced-motion: reduce) {
    .scene-sentences-root .ss-tile:active { transform: none; }
}