/* === practice.css - Modular segment of 8eacher design system === */

/* Practice View & Interactive Letter Boxes */
.practice-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--space-lg); }
.practice-header h2 { font-size: 1.15rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; }
#practice-progress { font-weight: 800; color: var(--text-primary); }

.perspective { perspective: 1000px; width: 100%; flex: 1; display: flex; flex-direction: column; }
.flashcard { 
    width: 100%; 
    flex: 1;
    min-height: 350px;
    position: relative; 
    margin-bottom: var(--space-lg); 
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
}
.card-face { 
    position: relative; 
    width: 100%; 
    flex: 1;
    min-height: 350px;
    display: flex; 
    flex-direction: column; 
    padding: var(--space-lg); 
    box-shadow: inset 0 -2px 0 var(--border-color); 
    border-radius: var(--radius-lg); 
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    overflow-y: visible; 
}
.card-face h3 { 
    font-size: 0.8rem; 
    text-transform: uppercase; 
    letter-spacing: 1.5px; 
    color: var(--text-secondary); 
    border-bottom: 2px solid var(--border-color); 
    padding-bottom: 12px; 
    margin-bottom: var(--space-lg); 
    font-weight: 700; 
}
.card-content { 
    flex-grow: 1; 
    display: flex; 
    flex-direction: column;
    align-items: center; 
    justify-content: center; 
    font-size: 1.45rem; 
    font-weight: 600; 
    line-height: 1.5; 
    text-align: center; 
    word-break: break-word; 
    color: var(--text-primary);
}
.card-img { 
    align-self: center;
    max-width: 100%; 
    max-height: 320px; 
    object-fit: contain; 
    margin-top: var(--space-md); 
    border-radius: var(--radius-sm); 
    border: 2px solid var(--border-color); 
}

.card-back { 
    background: var(--bg-secondary); 
    border: 2px solid var(--border-color); 
    box-shadow: inset 0 -2px 0 var(--border-color);
}

.practice-controls { display: flex; flex-direction: column; align-items: center; width: 100%; }


/* Monochromatic spelling boxes matching the Duolingo screenshot */
.letter-boxes-container {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
    justify-content: center;
    margin: var(--space-sm) 0;
}
.letter-box {
    width: 28px;
    height: 36px;
    border: 2px solid var(--border-color);
    box-shadow: inset 0 -2px 0 var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
    background: var(--bg-card);
    transition: var(--transition-fast);
}
input.letter-box {
    text-align: center;
    outline: none;
    padding: 0;
    caret-color: transparent;
    cursor: text;
    font-family: inherit;
}
input.letter-box:focus {
    border-color: var(--text-primary);
    background: var(--bg-secondary);
    box-shadow: inset 0 -2px 0 var(--text-primary);
}
.letter-box.active-clue {
    background: var(--accent-light);
    border-color: var(--text-secondary);
    color: var(--text-primary);
}
.letter-box.filled {
    border-color: var(--text-primary);
}


/* Inline letter boxes used inside sentences */
.letter-boxes-container.inline {
    display: inline-flex;
    gap: 4px;
    margin: 0 4px;
    vertical-align: middle;
}
.letter-boxes-container.inline .letter-box {
    width: 22px;
    height: 28px;
    font-size: 0.9rem;
    box-shadow: inset 0 -1.5px 0 var(--border-color);
    border-radius: var(--radius-sm);
}



/* Desktop Practice Workspace split-pane layout and scaling */
@media (min-width: 769px) {
    .view {
        max-width: 960px;
        margin: 0 auto;
    }
    #view-auth {
        max-width: 550px;
    }
    #view-practice {
        max-width: 960px; /* Standardize card width dynamically */
        transition: max-width 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }
    #view-practice.practice-layout-split {
        max-width: 1380px; /* Spacious split-pane layout for large maps/diagrams and inputs */
    }
    .practice-layout-split .practice-workspace {
        display: grid;
        grid-template-columns: 1.25fr 1fr;
        gap: 24px;
        align-items: stretch;
    }
    .practice-layout-map .practice-workspace {
        display: grid;
        grid-template-rows: 1fr auto;
        gap: 16px;
        width: 100%;
        flex: 1;
        min-height: 0;
    }
    .practice-layout-map .flashcard-container {
        height: 100%;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .practice-layout-map .flashcard {
        margin-bottom: 0;
        height: 100%;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .practice-layout-map .card-face:not(.hidden) {
        height: 100%;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .practice-layout-split .flashcard-container {
        height: 100%;
        display: flex;
        flex-direction: column;
    }
    .practice-layout-split .flashcard {
        margin-bottom: 0;
        height: 100%;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .practice-layout-split .card-face {
        height: 100%;
        display: flex;
        flex-direction: column;
        flex: 1;
    }
    .card-img {
        max-height: 450px;
    }
    .card-face h3 {
        font-size: 0.9rem;
    }
}

/* Image Card Practice - Container, Frame & Image Fit */
.practice-image-card-container {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: var(--space-sm);
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: var(--space-sm);
    overflow: hidden;
}

.image-card-frame {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-secondary);
    transition: border-color 0.2s ease;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    width: 100%;
    flex: 1;
    min-height: 0;
    margin: 0;
}

.image-card-frame img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

/* Image Card Clue Overlays & Mobile Stack Responsiveness */
.image-card-clue-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    flex-shrink: 0;
}

.image-card-clue-header {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-secondary);
    opacity: 0.75;
}

.image-card-clue-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--accent);
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    padding: 6px var(--space-md);
    border-radius: var(--radius-md);
    max-width: 60%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    box-shadow: inset 0 -1px 0 var(--border-color);
    transition: border-color 0.2s ease;
}

@media (max-width: 768px) {
    .image-card-clue-row {
        flex-direction: column;
        align-items: center;
        gap: var(--space-sm);
        margin-bottom: var(--space-xs);
    }
    .image-card-clue-header {
        font-size: 0.75rem;
        text-align: center;
        width: 100%;
        opacity: 0.65;
    }
    .image-card-clue-title {
        font-size: 0.85rem;
        text-align: center;
        max-width: 100%;
        width: fit-content;
    }
    .practice-image-card-container {
        padding: var(--space-sm) !important;
        gap: var(--space-xs) !important;
    }
}



/* Right Column Image container for Vocabulary Card Practice */
.practice-right-image-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
    flex-shrink: 0;
}

.practice-right-image-frame {
    width: 100%;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-secondary);
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.2s ease;
}

.practice-right-image-frame img {
    width: 100%;
    height: auto;
    max-height: 450px;
    object-fit: contain;
    display: block;
}

/* Interactive Premium Heatmap Hover Tooltip */
.heatmap-tooltip {
    position: absolute;
    z-index: 10000;
    pointer-events: none;
    /* Light Mode Default */
    background: rgba(250, 250, 247, 0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 14px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translate(-50%, -100%) scale(0.95);
    opacity: 0;
    transition: opacity 0.15s cubic-bezier(0.16, 1, 0.3, 1), transform 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    font-family: inherit;
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 160px;
}

body.dark-theme .heatmap-tooltip {
    background: rgba(34, 34, 32, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.heatmap-tooltip.visible {
    opacity: 1;
    transform: translate(-50%, -100%) scale(1) translateY(-8px);
}

.heatmap-tooltip::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 10px;
    height: 10px;
    /* Light Mode Default */
    background: rgba(250, 250, 247, 0.96);
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

body.dark-theme .heatmap-tooltip::after {
    background: rgba(34, 34, 32, 0.96);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.heatmap-tooltip-date {
    font-weight: 700;
    /* Light mode */
    color: var(--text-primary);
    font-size: 0.8rem;
    letter-spacing: -0.01em;
}

body.dark-theme .heatmap-tooltip-date {
    color: #ffffff;
}

.heatmap-tooltip-activity {
    font-size: 0.72rem;
    /* Light mode */
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

body.dark-theme .heatmap-tooltip-activity {
    color: rgba(255, 255, 255, 0.7);
}

.heatmap-tooltip-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.7rem;
}

.heatmap-tooltip-pill.creation {
    background: rgba(212, 166, 59, 0.15);
    color: var(--warning);
    border: 1px solid rgba(212, 166, 59, 0.3);
}

.heatmap-tooltip-pill.review {
    background: rgba(74, 128, 90, 0.15);
    color: var(--success);
    border: 1px solid rgba(74, 128, 90, 0.3);
}

/* Position and enlarge the canvas zoom controls pill in the bottom-right corner */
.canvas-zoom-controls {
    position: absolute !important;
    bottom: var(--space-md) !important;
    right: var(--space-md) !important;
    left: auto !important;
    top: auto !important;
    transform: none !important;
    margin: 0 !important;
    padding: 6px var(--space-sm) !important;
    border-radius: var(--radius-full) !important;
    gap: 6px !important;
    z-index: 10000 !important;
}

.canvas-zoom-controls .zoom-ctrl-btn {
    width: 28px !important;
    height: 28px !important;
    font-size: 1.05rem !important;
}

#btn-practice-zoom-reset,
#btn-practice-fullscreen {
    font-size: 0.8rem !important;
}

.canvas-zoom-controls .zoom-percent {
    font-size: 0.8rem !important;
    min-width: 40px !important;
}

/* Card Back Face Answer Layout to prevent collision with word type badge */
.practice-answer-container {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: var(--space-sm) !important;
    width: 100% !important;
    text-align: center !important;
}

.practice-answer-word {
    font-size: 1.85rem !important;
    font-weight: 800 !important;
    color: var(--text-primary) !important;
    line-height: 1.3 !important;
    letter-spacing: -0.5px !important;
    display: block !important;
}

.practice-answer-container .word-types-container {
    display: flex !important;
    flex-direction: row !important;
    gap: 6px !important;
    justify-content: center !important;
    flex-wrap: wrap !important;
    margin-top: 6px !important;
    width: 100% !important;
}

/* ==========================================
   Memory Map Viewport Full-Screen Styling
   ========================================== */
#view-practice.practice-layout-map {
    max-width: 100% !important;
    width: 100% !important;
    height: calc(100vh - 120px) !important;
    height: calc(100dvh - 120px) !important;
    min-height: 0 !important;
    margin: 0 !important;
}

@media (max-width: 768px) {
    #view-practice.practice-layout-map {
        height: calc(100vh - 85px) !important;
        height: calc(100dvh - 85px) !important;
    }
    .letter-box {
        width: 32px !important;
        height: 40px !important;
        font-size: 1.25rem !important;
    }
}

.practice-layout-map > .form-container {
    height: 100% !important;
    max-width: 100% !important;
    width: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    padding: var(--space-md) !important;
    box-sizing: border-box !important;
}

@media (max-width: 768px) {
    .practice-layout-map > .form-container {
        padding: var(--space-sm) !important;
    }
}

.practice-layout-map .practice-workspace {
    display: grid !important;
    grid-template-rows: 1fr auto !important;
    gap: var(--space-sm) !important;
    width: 100% !important;
    flex: 1 !important;
    min-height: 0 !important;
}

.practice-layout-map .flashcard-container {
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    flex: 1 !important;
    min-height: 0 !important;
}

.practice-layout-map .flashcard {
    margin-bottom: 0 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    flex: 1 !important;
    min-height: 0 !important;
}

.practice-layout-map .card-face:not(.hidden) {
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    flex: 1 !important;
    min-height: 0 !important;
}