/**
 * Sentence Builder Widget - Styles
 *
 * Blue theme, word-tile focused layout for sentence construction.
 * Mobile-first, accessible, therapeutic design.
 *
 * @package Aphasia_Exercises
 * @since 1.0.39
 */

/* =========================================================================
   1. CSS CUSTOM PROPERTIES
   ========================================================================= */

.sentence-builder-root {
    --sb-primary: #3b82f6;
    --sb-primary-dark: #2563eb;
    --sb-primary-light: #eff6ff;
    --sb-success: #22c55e;
    --sb-success-dark: #16a34a;
    --sb-success-light: #f0fdf4;
    --sb-error: #ef4444;
    --sb-error-dark: #dc2626;
    --sb-error-light: #fef2f2;

    /* Neutrals */
    --sb-neutral-50: #f9fafb;
    --sb-neutral-100: #f3f4f6;
    --sb-neutral-200: #e5e7eb;
    --sb-neutral-300: #d1d5db;
    --sb-neutral-400: #9ca3af;
    --sb-neutral-500: #6b7280;
    --sb-neutral-600: #4b5563;
    --sb-neutral-700: #374151;
    --sb-neutral-800: #1f2937;

    /* Typography & Layout */
    --sb-font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --sb-radius-full: 9999px;
    --sb-radius-xl: 16px;
    --sb-radius-lg: 12px;
    --sb-radius-md: 8px;
    --sb-radius-sm: 6px;

    /* Shadows */
    --sb-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --sb-shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --sb-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --sb-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    --sb-transition: 0.2s ease;
}

/* =========================================================================
   2. ELEMENTOR BUTTON RESET
   ========================================================================= */

.elementor-kit-15048 .sentence-builder-root button:not(.sb-settings-toggle):not(.sb-answer-slot):not(.sb-word-tile):not(.sb-check-btn):not(.sb-btn):not(.sb-restart-btn):not(.sb-flag-btn):not(.te-mh-gear):not(.te-mh-path):not(.instruction-banner__audio-btn),
.elementor-kit-15048 .sentence-builder-container button:not(.sb-settings-toggle):not(.sb-answer-slot):not(.sb-word-tile):not(.sb-check-btn):not(.sb-btn):not(.sb-restart-btn):not(.sb-flag-btn):not(.te-mh-gear):not(.te-mh-path):not(.instruction-banner__audio-btn) {
    background-color: transparent;
    border-color: transparent;
    color: inherit;
    padding: 0;
    font-size: inherit;
    line-height: inherit;
    letter-spacing: inherit;
    text-transform: none;
    border-radius: 0;
    box-shadow: none;
    min-height: auto;
}

/* =========================================================================
   3. BASE CONTAINER
   ========================================================================= */

.sentence-builder-root {
    font-family: var(--sb-font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--sb-neutral-800);
    max-width: 100%;
    box-sizing: border-box;
}

.sentence-builder-root *,
.sentence-builder-root *::before,
.sentence-builder-root *::after {
    box-sizing: border-box;
}

.sentence-builder-container {
    background: #fff;
    border-radius: var(--sb-radius-xl);
    padding: 20px;
    max-width: 680px;
    margin: 0 auto;
}

/* =========================================================================
   4. HEADER (now handled by merged header via createExerciseLayout)
   Old sb-header styles kept minimal for backwards compat
   ========================================================================= */

.sb-header {
    display: none; /* Hidden when merged header is active */
}

/* =========================================================================
   4b. PROGRESS PIPS
   ========================================================================= */

.sb-pips {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 10px 0 4px;
    flex-wrap: wrap;
}

.sb-pip-count {
    font-size: 13px;
    font-weight: 600;
    color: var(--sb-neutral-500);
    margin-right: 4px;
}

.sb-pip {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--sb-neutral-200);
    transition: background 0.2s, transform 0.2s;
}

.sb-pip-correct {
    background: var(--sb-success);
    animation: sbPipPop 0.3s ease;
}

.sb-pip-incorrect {
    background: var(--sb-error);
    animation: sbPipPop 0.3s ease;
}

.sb-pip-current {
    background: var(--sb-primary);
    transform: scale(1.3);
}

@keyframes sbPipPop {
    0% { transform: scale(0.5); }
    60% { transform: scale(1.4); }
    100% { transform: scale(1); }
}

/* =========================================================================
   4c. BOTTOM UTILS ROW
   ========================================================================= */

.sb-bottom-utils {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
}

.sentence-builder-root .sb-flag-btn {
    background: none;
    border: none;
    font-size: 16px;
    opacity: 0.25;
    cursor: pointer;
    padding: 4px;
    transition: opacity 0.2s;
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sentence-builder-root .sb-flag-btn:hover {
    opacity: 0.6;
}

.sentence-builder-root .sb-flag-btn:focus-visible {
    outline: 3px solid var(--sb-primary);
    outline-offset: 2px;
}

/* =========================================================================
   5. SETTINGS PANEL
   ========================================================================= */

.sb-settings-panel {
    background: var(--sb-neutral-50);
    border: 1px solid var(--sb-neutral-200);
    border-radius: var(--sb-radius-lg);
    padding: 16px;
    margin-bottom: 16px;
}

.sb-setting-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.sb-setting-row label {
    font-size: 14px;
    font-weight: 600;
    color: var(--sb-neutral-700);
    white-space: nowrap;
}

.sb-setting-select {
    padding: 8px 12px;
    border: 1px solid var(--sb-neutral-300);
    border-radius: var(--sb-radius-md);
    font-size: 14px;
    background: #fff;
    color: var(--sb-neutral-800);
    cursor: pointer;
    min-width: 200px;
}

.sb-setting-select:focus {
    outline: 3px solid var(--sb-primary);
    outline-offset: 2px;
    border-color: var(--sb-primary);
}

/* =========================================================================
   6. STREAK BADGE (used in pips row)
   ========================================================================= */

.sb-streak-badge {
    font-weight: 600;
    font-size: 13px;
    color: #f59e0b;
    margin-left: 4px;
}

/* =========================================================================
   8. EXERCISE AREA
   ========================================================================= */

.sb-exercise-area {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sb-prompt {
    text-align: center;
}

.sentence-builder-container .sb-prompt p {
    font-size: 16px;
    color: var(--sb-neutral-600);
    margin: 0;
}

/* =========================================================================
   9. ANSWER ZONE (slots at top)
   ========================================================================= */

.sb-answer-zone {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    min-height: 56px;
    padding: 16px;
    background: var(--sb-neutral-50);
    border: 2px solid var(--sb-neutral-200);
    border-radius: var(--sb-radius-lg);
    transition: border-color var(--sb-transition), background var(--sb-transition);
}

.sb-answer-zone.sb-feedback-correct {
    border-color: var(--sb-success);
    background: var(--sb-success-light);
}

.sb-answer-zone.sb-feedback-incorrect {
    border-color: var(--sb-error);
    background: var(--sb-error-light);
}

.sb-answer-slot,
.sentence-builder-root .sb-answer-slot {
    min-width: 56px;
    min-height: 48px;
    padding: 8px 16px;
    border-radius: var(--sb-radius-md);
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sb-transition);
    border: 2px solid transparent;
    line-height: 1.3;
    text-align: center;
    text-transform: none; /* Override Elementor .elementor-kit-15048 button { capitalize } */
}

.sb-answer-slot.empty {
    background: #fff;
    border: 2px solid var(--sb-neutral-200);
    color: transparent;
    cursor: default;
    min-width: 64px;
}

.sb-answer-slot.empty::after {
    content: '\00a0';
}

.sb-answer-slot.filled {
    background: var(--sb-primary-light);
    border: 2px solid var(--sb-primary);
    color: var(--sb-primary-dark);
}

.sb-answer-slot.filled:hover {
    background: #dbeafe;
    border-color: var(--sb-primary-dark);
}

.sb-answer-slot.filled:focus-visible {
    outline: 3px solid var(--sb-primary);
    outline-offset: 2px;
}

/* Feedback states on individual slots */
.sb-answer-slot.sb-correct {
    background: var(--sb-success-light);
    border-color: var(--sb-success);
    color: var(--sb-success-dark);
}

.sb-answer-slot.sb-incorrect {
    background: var(--sb-error-light);
    border-color: var(--sb-error);
    color: var(--sb-error-dark);
}

/* =========================================================================
   10. CHECK BUTTON
   ========================================================================= */

.sb-check-row {
    display: flex;
    justify-content: center;
}

.sb-check-btn {
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 700;
    min-height: 48px;
}

/* =========================================================================
   11. FEEDBACK
   ========================================================================= */

.sb-feedback {
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--sb-radius-lg);
    animation: sbFadeIn 0.3s ease;
}

.sb-feedback.sb-feedback-correct {
    background: var(--sb-success-light);
    border: 1px solid var(--sb-success);
}

.sb-feedback.sb-feedback-incorrect {
    background: var(--sb-error-light);
    border: 1px solid var(--sb-error);
}

.sentence-builder-container .sb-feedback-text {
    font-size: 18px;
    font-weight: 700;
    margin: 0 0 4px;
}

.sb-feedback-correct .sb-feedback-text {
    color: var(--sb-success-dark);
}

.sb-feedback-incorrect .sb-feedback-text {
    color: var(--sb-error-dark);
}

.sentence-builder-container .sb-correct-answer {
    font-size: 16px;
    color: var(--sb-neutral-700);
    font-weight: 500;
    margin: 0;
}

@keyframes sbFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   12. TILE POOL (bottom)
   ========================================================================= */

.sb-tile-pool {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    padding: 16px;
    background: var(--sb-neutral-50);
    border-radius: var(--sb-radius-lg);
    min-height: 60px;
}

.sb-word-tile,
.sentence-builder-root .sb-word-tile {
    min-width: 56px;
    min-height: 48px;
    padding: 10px 18px;
    background: #fff;
    border: 2px solid var(--sb-neutral-300);
    border-radius: var(--sb-radius-md);
    font-size: 18px;
    font-weight: 600;
    color: var(--sb-neutral-800);
    cursor: pointer;
    transition: all var(--sb-transition);
    box-shadow: var(--sb-shadow-sm);
    line-height: 1.3;
    text-align: center;
    text-transform: none; /* Override Elementor .elementor-kit-15048 button { capitalize } */
}

.sb-word-tile:hover:not(.used):not(:disabled) {
    background: var(--sb-primary-light);
    border-color: var(--sb-primary);
    color: var(--sb-primary-dark);
    box-shadow: var(--sb-shadow);
    transform: translateY(-2px);
}

.sb-word-tile:active:not(.used):not(:disabled) {
    transform: translateY(0);
    box-shadow: var(--sb-shadow-sm);
}

.sb-word-tile:focus-visible {
    outline: 3px solid var(--sb-primary);
    outline-offset: 2px;
}

.sb-word-tile.used {
    opacity: 0.3;
    cursor: default;
    transform: scale(0.95);
    box-shadow: none;
}

/* =========================================================================
   13. BUTTONS (general)
   ========================================================================= */

.sb-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: var(--sb-radius-md);
    font-family: var(--sb-font);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--sb-transition);
    text-decoration: none;
    line-height: 1.4;
    min-height: 44px;
}

.sb-btn-primary {
    background: var(--sb-primary);
    color: #fff;
    border-color: var(--sb-primary);
}

.sb-btn-primary:hover {
    background: var(--sb-primary-dark);
    border-color: var(--sb-primary-dark);
}

.sb-btn-secondary {
    background: #fff;
    color: var(--sb-primary);
    border-color: var(--sb-primary);
}

.sb-btn-secondary:hover {
    background: var(--sb-primary-light);
}

.sb-btn:focus-visible {
    outline: 3px solid var(--sb-primary);
    outline-offset: 2px;
}

/* =========================================================================
   14. COMPLETE SCREEN
   ========================================================================= */

.sb-complete-screen {
    text-align: center;
    padding: 24px 16px;
}

.sb-complete-emoji {
    font-size: 48px;
    margin-bottom: 12px;
    line-height: 1;
}

.sentence-builder-container .sb-complete-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--sb-neutral-800);
    margin: 0 0 8px;
}

.sentence-builder-container .sb-complete-message {
    font-size: 16px;
    color: var(--sb-neutral-500);
    margin: 0 0 24px;
}

.sb-complete-stats {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.sb-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.sb-stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--sb-primary-dark);
    line-height: 1;
}

.sb-stat-label {
    font-size: 13px;
    color: var(--sb-neutral-500);
    font-weight: 500;
}

.sb-restart-btn {
    margin-top: 8px;
}

/* =========================================================================
   15. LOGIN PROMPT
   ========================================================================= */

.sb-login-prompt {
    text-align: center;
    padding: 32px 16px;
}

.sentence-builder-container .sb-login-prompt h3 {
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 8px;
    color: var(--sb-neutral-800);
}

.sentence-builder-container .sb-login-prompt p {
    font-size: 15px;
    color: var(--sb-neutral-500);
    margin: 0 0 20px;
}

.sb-login-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* =========================================================================
   16. LOADING & ERROR STATES
   ========================================================================= */

.sb-loading,
.sb-error {
    text-align: center;
    padding: 32px 16px;
    color: var(--sb-neutral-500);
}

.sentence-builder-loading {
    text-align: center;
    padding: 32px 16px;
    color: var(--sb-neutral-500);
}

/* =========================================================================
   17. ACCESSIBILITY
   ========================================================================= */

.sb-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

@media (prefers-reduced-motion: reduce) {
    .sentence-builder-root *,
    .sentence-builder-root *::before,
    .sentence-builder-root *::after {
        animation-duration: 0.01ms;
        transition-duration: 0.01ms;
    }
    .sb-pip-correct,
    .sb-pip-incorrect {
        animation: none;
    }
}

/* =========================================================================
   18. RESPONSIVE — TABLET (768px)
   ========================================================================= */

@media (max-width: 768px) {
    .sentence-builder-container {
        padding: 18px;
        border-radius: var(--sb-radius-lg);
    }

    .sb-word-tile {
        padding: 8px 14px;
        font-size: 16px;
        min-height: 44px;
        min-width: 48px;
    }

    .sb-answer-slot {
        padding: 8px 12px;
        font-size: 16px;
        min-height: 44px;
        min-width: 48px;
    }

    .sb-tile-pool,
    .sb-answer-zone {
        gap: 8px;
        padding: 12px;
    }

    .sb-complete-stats {
        gap: 16px;
    }

    .sb-stat-value {
        font-size: 24px;
    }
}

/* =========================================================================
   19. RESPONSIVE — MOBILE (500px)
   ========================================================================= */

@media (max-width: 500px) {
    .sentence-builder-container {
        padding: 14px;
    }

    .sb-setting-select {
        min-width: 0;
        flex: 1;
    }

    .sb-exercise-area {
        gap: 14px;
    }

    .sb-word-tile {
        padding: 8px 12px;
        font-size: 15px;
    }

    .sb-answer-slot {
        padding: 6px 10px;
        font-size: 15px;
    }

    .sb-check-btn {
        width: 100%;
    }

    .sb-login-buttons {
        flex-direction: column;
    }
}

/* =========================================================================
   20. RESPONSIVE — SMALL PHONES (360px)
   ========================================================================= */

@media (max-width: 360px) {
    .sentence-builder-container {
        padding: 10px;
    }

    .sb-word-tile {
        padding: 6px 10px;
        font-size: 14px;
        min-width: 44px;
        min-height: 44px;
    }

    .sb-answer-slot {
        padding: 6px 8px;
        font-size: 14px;
        min-width: 44px;
        min-height: 44px;
    }

    .sb-tile-pool,
    .sb-answer-zone {
        gap: 6px;
        padding: 10px;
    }

    .sb-complete-stats {
        flex-direction: column;
        gap: 12px;
    }
}