:root {
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --accent-quran: #059669;
    --accent-amma: #2563eb;
    --accent-qaidah: #db2777;
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --header-gradient: linear-gradient(135deg, #2563eb, #7c3aed);
    --glass-bg: rgba(255, 255, 255, 0.8);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

* { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box; 
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-color);
    font-size: 0.9rem;
    background-image: 
        radial-gradient(circle at 100% 0%, rgba(37, 99, 235, 0.05), transparent 25%),
        radial-gradient(circle at 0% 100%, rgba(124, 58, 237, 0.05), transparent 25%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 1rem;
    line-height: 1.5;
    overflow-x: hidden; /* Prevent horizontal scroll on body */
}

@media (min-width: 768px) {
    body {
        padding: 1.25rem;
    }
}

.student-name-cell { 
    cursor: pointer; 
    color: #2563eb; 
    transition: all 0.2s; 
}
.student-name-cell:hover { 
    color: #1d4ed8; 
    text-decoration: underline; 
}

.lock-icon {
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    user-select: none;
    padding: 4px 12px;
    border-radius: 2rem;
    display: flex;
    align-items: center;
    gap: 4px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 1px solid transparent;
}
.lock-icon:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}
.lock-icon:active {
    transform: translateY(0);
}
.lock-locked { 
    color: #991b1b; 
    background: #fee2e2; 
    border-color: #fca5a5;
}
.lock-unlocked { 
    color: #065f46; 
    background: #d1fae5; 
    border-color: #6ee7b7;
}

.modal-subtitle {
    font-size: 0.95rem;
    font-weight: 400;
    color: var(--text-secondary);
    margin-top: 4px;
}

.container { 
    max-width: 1200px; 
    margin: 0 auto; 
    width: 100%;
}

.header-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    padding: 1rem 0;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.view-toggle {
    display: flex;
    background: #e2e8f0;
    padding: 4px;
    border-radius: 0.75rem;
    gap: 2px;
}

.toggle-btn {
    background: transparent;
    border: none;
    padding: 0.4rem 0.8rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
    opacity: 0.6;
}

.toggle-btn.active {
    background: white;
    opacity: 1;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

@media (min-width: 768px) {
    .header-content {
        flex-direction: row;
        justify-content: space-between;
        padding: 2rem 0;
    }
}

.btn-primary {
    background: linear-gradient(to right, #10b981, #059669) !important;
    border-radius: 2rem !important;
    padding: 0.75rem 2rem !important;
    box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.2);
}

h1 { 
    font-size: 1.05rem; 
    font-weight: 800; 
    background: var(--header-gradient); 
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent; 
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    h1 { font-size: 1.8rem; }
}

.add-student-card { background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 1.5rem; padding: 2rem; margin-bottom: 2rem; box-shadow: 0 4px 24px rgba(0, 0, 0, 0.07); }
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1.5rem; align-items: end; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
label { font-size: 0.875rem; font-weight: 600; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.05em; }
select, input { 
    background: #f8fafc; 
    border: 1px solid var(--border-color); 
    border-radius: 0.75rem; 
    padding: 0.75rem 1rem; 
    color: var(--text-primary); 
    outline: none; 
    transition: all 0.2s; 
    font-size: 1rem; /* Prevents auto-zoom on mobile */
    width: 100%;
}
select:focus, input:focus { border-color: #2563eb; box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12); }
button { background: linear-gradient(to bottom right, #2563eb, #1d4ed8); color: white; border: none; border-radius: 0.75rem; padding: 0.75rem 1.5rem; font-weight: 600; cursor: pointer; transition: transform 0.2s, opacity 0.2s; }
button:hover { transform: translateY(-2px); opacity: 0.9; }

.progress-table-container { 
    background: var(--card-bg); 
    border: 1px solid var(--border-color); 
    border-radius: 1.25rem; 
    overflow: hidden; 
    box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.05);
    margin-top: 1rem;
    position: relative;
}

/* Scroll Indicators */
.progress-table-container::after {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    width: 20px;
    background: linear-gradient(to left, rgba(255,255,255,0.8), transparent);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s;
}

@media (max-width: 768px) {
    .progress-table-container::after { opacity: 1; }
}

/* Custom Scrollbar for the table container */
.progress-table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table { 
    width: 100%; 
    border-collapse: collapse; 
    text-align: left; 
    min-width: 700px; 
}

th { 
    background: #f8fafc; 
    padding: 0.6rem 0.5rem; 
    font-size: 0.7rem; 
    font-weight: 700; 
    color: var(--text-secondary); 
    text-transform: uppercase; 
    letter-spacing: 0.1em; 
    border-bottom: 1px solid var(--border-color); 
    white-space: nowrap;
}

td { 
    padding: 0.6rem 0.5rem; 
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

@media (min-width: 768px) {
    th { padding: 0.7rem 0.6rem; }
    td { padding: 0.7rem 0.6rem; }
}

@media (max-width: 1024px) {
    th, td {
        padding-left: 0.4rem;
        padding-right: 0.4rem;
    }
}


.badge { padding: 0.25rem 0.75rem; border-radius: 2rem; font-size: 0.75rem; font-weight: 700; }
.badge-quran { background: rgba(5, 150, 105, 0.1); color: var(--accent-quran); }
.badge-amma { background: rgba(37, 99, 235, 0.1); color: var(--accent-amma); }
.badge-qaidah { background: rgba(219, 39, 119, 0.1); color: var(--accent-qaidah); }

.percent-pill, .unit-label { 
    font-size: 0.75rem; 
    font-weight: 500; 
    color: #94a3b8; 
    margin-left: 2px;
}

.loading-overlay { position: fixed; inset: 0; background: var(--bg-color); display: flex; justify-content: center; align-items: center; z-index: 5000; transition: opacity 0.5s; }
.spinner { width: 40px; height: 40px; border: 4px solid rgba(37, 99, 235, 0.15); border-left-color: #2563eb; border-radius: 50%; animation: spin 1s linear infinite; }

.action-dots { 
    display: none !important;
    cursor: pointer; 
    font-size: 1.5rem;
    color: var(--text-secondary); 
    padding: 10px; 
    border-radius: 50%; 
    transition: all 0.2s; 
    position: absolute; 
    top: 5px;
    right: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    z-index: 100;
}
.action-dots:hover { background: rgba(0,0,0,0.05); color: var(--text-primary); }

/* Move dots and name closer together */
th:first-child, td:first-child {
    padding-right: 0 !important;
}
th:nth-child(2), td:nth-child(2) {
    padding-left: 0.5rem !important;
}

.modal { 
    display: none; 
    position: fixed; 
    inset: 0; 
    background: rgba(15, 23, 42, 0.6); 
    backdrop-filter: blur(8px); 
    z-index: 5000; 
    justify-content: center; 
    align-items: center; 
    padding: 0.5rem;
}

.modal-content { 
    background: #ffffff; 
    border: 1px solid var(--border-color); 
    border-radius: 1.5rem; 
    padding: 1.5rem; 
    width: 95%; 
    max-width: 600px; 
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    display: flex;
    flex-direction: column;
}

@media (min-width: 768px) {
    .modal-content { padding: 2rem; max-width: 600px; }
}

.modal-header { 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    margin-bottom: 1.25rem; 
    position: sticky;
    top: 0;
    background: white;
    padding-bottom: 0.5rem;
    z-index: 10;
}

.modal-footer { 
    display: flex; 
    flex-direction: column; 
    gap: 0.75rem; 
    margin-top: 1.5rem; 
    padding-top: 1rem;
    border-top: 1px solid #f1f5f9;
}

@media (min-width: 480px) {
    .modal-footer {
        flex-direction: row;
        justify-content: flex-end;
    }
}

/* Context Menu Dropdown */
.context-menu { display: none; position: fixed; background: #ffffff; border: 1px solid var(--border-color); border-radius: 0.5rem; box-shadow: 0 10px 30px rgba(0, 0, 0, 0.12); z-index: 3000; min-width: 150px; overflow: hidden; }
.context-menu-item { padding: 0.75rem 1rem; cursor: pointer; font-size: 0.875rem; transition: background 0.2s; color: var(--text-primary); }
.context-menu-item:hover { background: #eff6ff; color: #2563eb; }

/* Modal Animation */
.modal {
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes shake { 0%, 100% { transform: translateX(0); } 25% { transform: translateX(-15px); } 75% { transform: translateX(15px); } }

/* Row tinting by book */
tr.row-amma { background-color: #dbeafe; }
tr.row-amma:hover { background-color: #bfdbfe; }
tr.row-qaidah { background-color: #fce7f3; }
tr.row-qaidah:hover { background-color: #fbcfe8; }

@keyframes spin { to { transform: rotate(360deg); } }

/* Cards View Styles */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    margin-top: 1.5rem;
}

.student-card {
    background: white;
    border-radius: 1.25rem;
    padding: 1.5rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    position: relative;
    transition: transform 0.2s, box-shadow 0.2s;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.student-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.card-amma { background-color: #dbeafe; }
.card-qaidah { background-color: #fce7f3; }
.card-quran { background-color: white; }

.card-accent-bar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 5px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.25rem;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 800;
    color: #2563eb;
    cursor: pointer;
    line-height: 1.3;
}

.card-title:hover {
    text-decoration: underline;
}

.card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.card-stat {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.card-stat-label {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-stat-value {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-footer {
    margin-top: auto;
    background: #f8fafc;
    padding: 1rem;
    border-radius: 0.8rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.card-footer-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-footer-label {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.75rem;
}

.card-footer-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.progress-container {
    width: 100%;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    transition: width 0.3s ease;
}

@media (max-width: 480px) {
    .cards-grid {
        grid-template-columns: 1fr;
    }
}

/* Group Cards Styles */
.group-card {
    background: white;
    border-radius: 1.25rem;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-color);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1rem;
    position: relative;
}

.group-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: var(--accent-amma);
}

.group-icon {
    width: 64px;
    height: 64px;
    background: #f0f9ff;
    border-radius: 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--accent-amma);
    margin-bottom: 0.5rem;
}

.group-info h3 {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.group-year-tag {
    background: #f1f5f9;
    padding: 0.3rem 0.8rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
}

.group-stats {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Year Specific Themes */
.group-card.year-1 { background: #fed7aa; border-color: #fdba74; }
.group-card.year-1 .group-icon { background: rgba(255,255,255,0.5); color: #ea580c; }

.group-card.year-2 { background: #a7f3d0; border-color: #6ee7b7; }
.group-card.year-2 .group-icon { background: rgba(255,255,255,0.5); color: #059669; }

.group-card.year-3 { background: #fde68a; border-color: #fcd34d; }
.group-card.year-3 .group-icon { background: rgba(255,255,255,0.5); color: #d97706; }

.group-card.year-4 { background: #fecdd3; border-color: #fda4af; }
.group-card.year-4 .group-icon { background: rgba(255,255,255,0.5); color: #e11d48; }

.group-card.year-5 { background: #c7d2fe; border-color: #a5b4fc; }
.group-card.year-5 .group-icon { background: rgba(255,255,255,0.5); color: #4f46e5; }

.group-card.year-6 { background: #a5f3fc; border-color: #67e8f9; }
.group-card.year-6 .group-icon { background: rgba(255,255,255,0.5); color: #0891b2; }

/* Modal Animations */
@keyframes modalPop {
    0% { transform: scale(0.7); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

/* Group Management Protection */
.edit-mode-active .action-dots {
    display: flex !important;
}

.edit-mode-active .group-card {
    border-style: dashed !important;
    animation: pulseBorder 2s infinite;
}

@keyframes pulseBorder {
    0% { border-color: rgba(0,0,0,0.1); }
    50% { border-color: rgba(0,0,0,0.3); }
    100% { border-color: rgba(0,0,0,0.1); }
}

.edit-mode-active-btn {
    background: #ef4444 !important;
    color: white !important;
}

/* Student Management Protection */
.student-dots {
    display: none !important; /* Hidden by default */
}

.manage-students-active .student-dots {
    display: flex !important;
}

.manage-students-active-btn {
    background: #ef4444 !important;
    color: white !important;
}

/* Teacher Management Styles */
#teachers-list-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.25rem;
}

#teacher-groups-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 0.5rem;
    padding: 0.5rem 0;
}

.teacher-group-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.8rem;
    border-radius: 0.75rem;
    background: #f8fafc;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    cursor: pointer;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
    margin-bottom: 0; /* Let grid handle gap */
}

.teacher-group-item:hover {
    border-color: var(--accent-amma);
    background: #f0f9ff;
    transform: translateX(4px);
}

.teacher-group-item:last-child {
    margin-bottom: 0;
}

.teacher-group-item input[type="checkbox"] {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--accent-amma);
    cursor: pointer;
}

.teacher-group-item label {
    flex: 1;
    cursor: pointer;
    text-transform: none;
    letter-spacing: normal;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
}

.teacher-group-item.selected {
    border-color: var(--accent-amma);
    background: #eff6ff;
}