/* --- TEACHER ADMIN & DASHBOARD MODULE WORKSPACE DESIGNS --- */
:root {
    --bg-color: #f7f9fa;
    --card-bg: #ffffff;
    --text-color: #2c3e50;
    --border-color: #e2e8f0;
    --primary: #4a5568;
    --accent-green: #2ecc71;
    --accent-pink: #e91e63;
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
}

.workspace-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px;
}

.teacher-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

.teacher-header h1 { 
    margin: 0; 
    font-size: 1.8rem; 
    font-weight: 700; 
    color: #1a202c; 
}

/* Centralized UI Workspace Horizontal Dashboard Divider Line Pattern */
.dashboard-divider {
    height: 6px;
    background: linear-gradient(to right, var(--accent-green) 50%, var(--accent-pink) 50%);
    margin: 15px 0 30px 0;
    border: none;
}

.grid-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 25px;
}

@media (max-width: 900px) {
    .grid-layout { grid-template-columns: 1fr; }
}

.card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
}

.card h2 { 
    margin-top: 0; 
    font-size: 1.3rem; 
    margin-bottom: 15px; 
    color: #2d3748; 
    border-bottom: 1px solid var(--border-color); 
    padding-bottom: 8px; 
}

/* Management Form System Controllers */
.form-group { margin-bottom: 15px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.9rem; }
.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-sizing: border-box;
    font-size: 0.95rem;
    font-family: inherit;
}
textarea.form-control { resize: vertical; min-height: 100px; }

.btn {
    background-color: var(--primary);
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity 0.2s;
}
.btn:hover { opacity: 0.9; }
.btn-danger { background-color: var(--accent-pink); }
.btn-assign { background-color: var(--accent-green); }

/* Automated System Notifications Layout */
.flash-messages { margin-bottom: 20px; }
.alert { padding: 12px; border-radius: 6px; margin-bottom: 8px; font-weight: 500; font-size: 0.9rem; }
.alert-success { background-color: #def7ec; color: #03543f; border: 1px solid #bcf0da; }
.alert-danger { background-color: #fde8e8; color: #9b1c1c; border: 1px solid #fbd5d5; }

/* Analytical Telemetry Data Tables Engine */
.table-responsive { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; margin-top: 10px; font-size: 0.9rem; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid var(--border-color); }
th { background-color: #f8fafc; font-weight: 600; }

.inline-assign-form { display: flex; gap: 8px; align-items: center; }
.inline-assign-form select { padding: 6px; border-radius: 4px; border: 1px solid var(--border-color); }

/* --- STUDENT PORTAL READING CANVAS LAYOUT DESIGNS --- */
.reading-container {
    max-width: 900px;
    margin: 30px auto;
    padding: 0 20px;
}

.instruction-banner {
    background-color: #ebf8ff;
    border-left: 4px solid #3182ce;
    color: #2b6cb0;
    padding: 15px 20px;
    border-radius: 0 8px 8px 0;
    margin-bottom: 25px;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* The Clean Unified Dashboard Row Toolbar Line Layout */
.dashboard-toolbar-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    padding: 12px 20px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.04);
}

.toolbar-controls {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Toggle Switch Control Styling */
.switch-container {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
}

/* Target Presentation Reading Content Area */
.reading-text-canvas {
    font-size: 1.35rem;
    line-height: 2.2;
    color: #2d3748;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #e2e8f0;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
    margin-bottom: 30px;
}

/* Token Word Element Interactions & Vault Highlights Mapping */
.readable-token {
    display: inline-block;
    position: relative;
    cursor: pointer;
    padding: 0 2px;
    margin-right: 2px;
    border-radius: 4px;
    transition: background-color 0.2s, color 0.2s;
}
.readable-token:hover {
    background-color: #edf2f7;
}

/* Accurate spaCy Grammar Color Coding Classes Matrix */
.grammar-active .subject {
    background-color: #dbf7ec !important; /* Soft Green nominal subject */
    color: #03543f !important;
    font-weight: 500;
}

.grammar-active .verb-main, 
.grammar-active .verb-aux, 
.grammar-active .verb-modal, 
.grammar-active .verb-linking {
    background-color: #fce8e6 !important; /* Soft Pink verbs */
    color: #a81f14 !important;
    font-weight: 500;
}

/* Non-interactive punctuation formatting */
.token-punctuation {
    display: inline;
    color: #4a5568;
}

/* TRUE SCREEN-FREEZING BLUR OVERLAY MASK SETUP */
.freeze-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(26, 32, 44, 0.4);
    backdrop-filter: blur(6px); /* Canvas Blur Stabilization */
    -webkit-backdrop-filter: blur(6px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

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

.popup-modal-card {
    background: #ffffff;
    padding: 30px;
    border-radius: 16px;
    width: 90%;
    max-width: 450px;
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.15);
    border: 1px solid #e2e8f0;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.freeze-overlay.active .popup-modal-card {
    transform: scale(1);
}

/* --- CENTRALIZED STUDENT DASHBOARD PORTAL DESIGNS --- */
.student-portal-container {
    max-width: 800px; 
    margin: 40px auto 0 auto;
    padding: 0 10px;
}

.task-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    background-color: var(--card-bg);
    transition: transform 0.2s, box-shadow 0.2s;
}

.task-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.task-info {
    flex-grow: 1;
    padding-right: 20px;
}

.task-info h3 {
    margin: 0 0 6px 0;
    color: #2d3748;
    font-size: 1.1rem;
}

.task-info p {
    margin: 0;
    color: #718096;
    font-size: 0.88rem;
    font-style: italic;
}

.task-action-box {
    display: flex; 
    align-items: center; 
    gap: 15px;
}

.task-item-completed-bg {
    background-color: #f8fafc;
}

.task-title-completed {
    color: #718096; 
    text-decoration: line-through;
}

.task-date-completed {
    color: #a0aec0;
}

/* Status Badges Mapping Matrix */
.badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    font-weight: bold;
    text-transform: uppercase;
}

.badge-pending {
    background-color: #feebc8;
    color: #c05621;
}

.badge-completed {
    background-color: #c6f6d5;
    color: #22543d;
}

/* --- ROLE-BASED LOGIN PANEL CONFIGURATIONS --- */
.login-body-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: #f7f9fa;
    margin: 0;
}

.login-auth-card {
    background-color: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 16px;
    padding: 35px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.05);
}

.login-auth-card h1 {
    margin-top: 0;
    margin-bottom: 8px;
    font-size: 1.6rem;
    font-weight: 700;
    color: #1a202c;
    text-align: center;
}

.login-subtitle {
    text-align: center;
    color: #718096;
    font-size: 0.9rem;
    margin-bottom: 25px;
}


/* --- EXPANDABLE VOCABULARY VAULT TILES DRAWER DESIGNS --- */
.vault-layout-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

/* Dynamic Animation Drawer System */
.folder-tile-card {
    background: #e7fdfd;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
}

.folder-tile-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05);
}

.folder-title-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    font-size: 1.15rem;
    color: #2d3748;
}

.folder-count-badge {
    background-color: #edf2f7;
    color: #4a5568;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
}

/* Collapsible inner list container */
.folder-drawer-content {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), opacity 0.2s ease, margin-top 0.2s ease;
    overflow: hidden;
}

/* Triggered instantly by our custom vault.js toggle framework */
.folder-tile-card.expanded .folder-drawer-content {
    max-height: 1000px; /* Expands to natural internal content length height bounds */
    opacity: 1;
    margin-top: 15px;
    border-top: 1px dashed var(--border-color);
    padding-top: 12px;
}

.vault-word-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    border-bottom: 1px solid #f7fafc;
    font-size: 0.95rem;
}
.vault-word-row:last-child { border-bottom: none; }

.v-eng { font-weight: 600; color: var(--accent-pink); }
.v-rus { color: #4a5568; font-style: italic; }


/* --- TEACHER ADMIN INSPECTION PORTFOLIO REVIEW DESIGNS --- */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 20px;
}

.audio-player-card {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 15px;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 10px;
}

.portfolio-topic-header {
    font-size: 1rem; 
    color: #4a5568; 
    background: #edf2f7; 
    padding: 4px 10px; 
    border-radius: 4px; 
    display: inline-block; 
    margin-bottom: 10px;
    font-weight: 700;
}

.portfolio-vocab-item {
    padding: 6px 0; 
    border-bottom: 1px dashed #e2e8f0; 
    font-size: 0.95rem;
}
.portfolio-vocab-item:last-child { border-bottom: none; }

/* --- EDITABLE TRANSLATION PREVIEW CANVAS MODULES --- */
.edit-table-box {
    margin-top: 20px;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 8px;
    padding: 15px;
    max-height: 400px;
    overflow-y: auto;
}

.edit-word-row {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 8px 0;
    border-bottom: 1px solid #e2e8f0;
}
.edit-word-row:last-child { border-bottom: none; }

.edit-word-row label {
    flex: 1;
    font-weight: 600;
    color: #1a202c;
    font-size: 0.95rem;
}

.edit-translation-input {
    flex: 2;
    padding: 6px 10px;
    border: 1px solid #cbd5e1;
    border-radius: 4px;
    font-size: 0.9rem;
    font-family: inherit;
    background-color: #ffffff;
}
.edit-translation-input:focus {
    border-color: var(--accent-green);
    outline: none;
    box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.15);
}

/* --- STUDENT VAULT INLINE INTERACTION DESIGNS --- */
.vault-controls-box {
    display: flex;
    align-items: center;
    gap: 10px;
}

.vault-select-folder {
    padding: 4px 8px;
    font-size: 0.8rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: #ffffff;
    cursor: pointer;
    font-family: inherit;
    transition: border-color 0.2s;
}
.vault-select-folder:focus {
    outline: none;
    border-color: var(--primary);
}

.vault-play-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 2px 6px;
    border-radius: 4px;
    transition: background 0.2s;
}
.vault-play-btn:hover { 
    background: #e2e8f0; 
}
/* --- EXTRA SANDBOX STATUS BADGES MATRIX --- */
.badge-saved {
    background-color: #e2e8f0;
    color: #4a5568;
}

.badge-submitted {
    background-color: #c6f6d5;
    color: #22543d;
}

.task-item-submitted-bg {
    background-color: #f8fafc;
    border-left: 4px solid var(--accent-green);
}

/* --- STUDENT VAULT INLINE RENAMING MODULE DESIGNS --- */
.rename-input-box {
    padding: 2px 6px;
    font-size: 0.9rem;
    border: 1px solid var(--accent-green);
    border-radius: 4px;
    font-family: inherit;
    max-width: 140px;
}
.rename-input-box:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(46, 204, 113, 0.15);
}

.rename-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.85rem;
    padding: 2px 6px;
    margin-left: 4px;
    border-radius: 4px;
    transition: background 0.2s;
}
.rename-action-btn:hover { 
    background: #cbd5e1; 
}

.rename-workspace-row {
    display: flex; 
    align-items: center; 
    gap: 5px;
}

.vault-header-actions-wrapper {
    display: flex; 
    gap: 15px; 
    align-items: center;
}



/* ==========================================================================
   MOBILE & SMARTPHONE RESPONSIVE MEDIA QUERIES (Screens under 768px)
   ========================================================================== */
@media screen and (max-width: 768px) {
    
    /* 1. Global Spatial Adjustments */
    body {
        padding: 12px;
    }
    
    .workspace-container,
    .student-portal-container,
    .reading-container {
        margin-top: 15px;
        margin-bottom: 25px;
    }

    /* 2. Header Re-arrangements */
    .teacher-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .teacher-header h1 {
        font-size: 1.4rem;
    }

    /* 3. The Signature Horizontal Dashboard Line Toolbar (Mobile Transformation) */
    .dashboard-toolbar-line {
        flex-direction: column;
        align-items: stretch;
        padding: 12px;
        gap: 12px;
    }

    .toolbar-controls {
        flex-wrap: wrap; /* Permits counters to wrap naturally on tiny displays */
        gap: 10px 14px;
        justify-content: space-between;
    }

    .switch-container {
        width: 100%; /* Gives the grammar checkbox its own full row line */
        margin-bottom: 2px;
    }

    #completeTaskBtn {
        width: 100%; /* Makes submission comfortable to tap on mobile thumbs */
        padding: 12px;
        font-size: 0.95rem;
    }

    .portfolio-grid { 
        grid-template-columns: 1fr !important; 
        gap: 15px;
    }

    /* 4. Reading Canvas Optimization */
    .reading-text-canvas {
        font-size: 1.15rem; /* Slightly smaller for mobile reading comfort */
        line-height: 2.0;
        padding: 18px;
        border-radius: 8px;
    }

    /* 5. True Screen-Freezing Pop-Up Card Scale Modifiers */
    .popup-modal-card {
        padding: 20px;
        width: 92%;
    }

    .popup-modal-card h2 {
        font-size: 1.35rem;
    }

    #recordMicBtn, #stopMicBtn {
        padding: 12px 8px; /* Larger tap targets for mobile hardware buttons */
        font-size: 0.85rem;
    }

    /* 6. Teacher Grid Dashboard Layout Transformation */
    .grid-layout {
        grid-template-columns: 1fr; /* Drops the sidebar cleanly underneath the form */
        gap: 15px;
    }

    /* 7. Vocabulary Vault & Assignment Card Layout Grids */
    .vault-layout-grid {
        grid-template-columns: 1fr; /* Stack drawers vertically on smartphones */
        gap: 12px;
    }

    .task-item {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px;
    }

    .task-action-box {
        justify-content: space-between;
        width: 100%;
    }

    /* 8. Table Compression for Reports (Enables scroll-sweeping swipes) */
    table {
        font-size: 0.8rem;
    }

    th, td {
        padding: 8px 6px;
    }
    .rename-input-box {
        max-width: 110px; /* Slims down the input width specifically on small touch screens */
    }


    
}

/* Extra optimization safety for ultra-small smartphones (Screens under 360px) */
@media screen and (max-width: 360px) {
    .toolbar-controls {
        font-size: 0.8rem;
    }
    
    .reading-text-canvas {
        font-size: 1.05rem;
        padding: 12px;
    }
}