/* Modern UI Refactoring */

/* Tabs Navigation */
.modern-tabs {
    display: flex;
    gap: 8px;
    background: rgba(240, 244, 248, 0.6);
    padding: 6px;
    border-radius: 14px;
    margin-bottom: 20px;
    border: 1px solid rgba(255,255,255,0.4);
}
.modern-tab-btn {
    flex: 1;
    padding: 10px 14px;
    background: transparent;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: none;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}
.modern-tab-btn:hover {
    color: var(--color-primary);
    background: rgba(255,255,255,0.5);
    transform: none;
    box-shadow: none;
}
.modern-tab-btn.active {
    background: white;
    color: var(--color-primary);
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
.modern-tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}
.modern-tab-content.active {
    display: block;
}

/* Accordion for Settings/Secondary actions */
.accordion {
    margin-bottom: 15px;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: rgba(255,255,255,0.6);
    overflow: hidden;
}
.accordion-header {
    padding: 14px 16px;
    background: transparent;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    color: var(--color-primary);
    transition: background 0.2s;
    user-select: none;
}
.accordion-header:hover {
    background: rgba(255,255,255,0.8);
}
.accordion-header svg {
    transition: transform 0.3s;
    width: 20px;
    height: 20px;
}
.accordion.open .accordion-header svg {
    transform: rotate(180deg);
}
.accordion-body {
    padding: 0 16px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}
.accordion.open .accordion-body {
    padding: 16px;
    max-height: 1500px;
}

/* General Layout Polishing */
.ui-card {
    border: 1px solid rgba(255, 255, 255, 0.4) !important;
    background: rgba(255, 255, 255, 0.65) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 16px !important;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03) !important;
    padding: 20px !important;
}
.ui-card:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 8px 25px rgba(0,0,0,0.06) !important;
}

#dash-reminders {
    background: linear-gradient(135deg, rgba(255,243,205,0.9), rgba(255,235,170,0.9));
    border: 1px solid #ffeeba;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 20px;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Teacher Grid Redesign */
.teacher-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
.teacher-tile { background: rgba(255,255,255,0.9); border: 1px solid rgba(255,255,255,0.5); border-radius: 12px; padding: 15px; text-align: center; cursor: pointer; transition: transform 0.2s, box-shadow 0.2s; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px; color: var(--color-primary); font-weight: 600; font-size: 0.85rem; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.teacher-tile:hover { transform: translateY(-3px); box-shadow: 0 6px 15px rgba(0,0,0,0.1); }
.teacher-tile-icon { font-size: 1.5rem; }
.outline.red-border { border-color: #e74c3c; color: #e74c3c; background: transparent; }
.outline.red-border:hover { background: #e74c3c; color: #fff; }


/* Pill Checkbox Styles for Teacher Send Question Form */
.pill-checkbox { display: inline-block; cursor: pointer; }
.pill-checkbox input { display: none; }
.pill-checkbox span { display: inline-block; padding: 6px 12px; background: rgba(52, 152, 219, 0.1); border: 1px solid rgba(52, 152, 219, 0.3); border-radius: 20px; color: #3498db; transition: all 0.2s; font-weight: 600; }
.pill-checkbox input:checked + span { background: #3498db; color: #fff; border-color: #3498db; box-shadow: 0 2px 5px rgba(52, 152, 219, 0.3); }
.pill-checkbox:hover span { background: rgba(52, 152, 219, 0.2); }
.pill-checkbox input:checked:hover + span { background: #2980b9; }