/* ===== Theme Variables ===== */
:root,[data-theme="light"]{--primary:#1976D2;--primary-dark:#1565C0;--primary-light:#42A5F5;--secondary:#26A69A;--danger:#EF5350;--warning:#FFA726;--success:#66BB6A;--bg:#f5f7fa;--surface:#ffffff;--surface-hover:#f0f2f5;--text:#212121;--text-secondary:#666;--text-muted:#999;--border:#e0e0e0;--sidebar-bg:var(--primary);--sidebar-text:rgba(255,255,255,0.8);--sidebar-text-active:#ffffff;--sidebar-hover:rgba(255,255,255,0.15);--card-shadow:0 1px 3px rgba(0,0,0,0.08);--input-bg:#ffffff;--table-hover:#f8f9fa;--badge-teacher-bg:#E3F2FD;--badge-teacher-text:var(--primary);--badge-student-bg:#F3E5F5;--badge-student-text:#7B1FA2;--badge-parent-bg:#E8F5E9;--badge-parent-text:#2E7D32;--unread-bg:#F5F8FF;--auth-gradient:linear-gradient(135deg,var(--primary) 0%,#0D47A1 100%)}
[data-theme="dark"]{--primary:#64B5F6;--primary-dark:#42A5F5;--primary-light:#90CAF9;--secondary:#80CBC4;--danger:#EF5350;--warning:#FFB74D;--success:#81C784;--bg:#121212;--surface:#1e1e1e;--surface-hover:#2a2a2a;--text:#e0e0e0;--text-secondary:#aaa;--text-muted:#777;--border:#333;--sidebar-bg:#1a1a2e;--sidebar-text:rgba(255,255,255,0.7);--sidebar-text-active:#ffffff;--sidebar-hover:rgba(255,255,255,0.1);--card-shadow:0 1px 3px rgba(0,0,0,0.3);--input-bg:#2a2a2a;--table-hover:#2a2a2a;--badge-teacher-bg:#1a3a5c;--badge-teacher-text:#64B5F6;--badge-student-bg:#3a1a4a;--badge-student-text:#CE93D8;--badge-parent-bg:#1a3a2a;--badge-parent-text:#81C784;--unread-bg:#1a2332;--auth-gradient:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%)}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;transition:background .3s,color .3s}
[dir="rtl"] body{font-family:'Tajawal','Inter',-apple-system,BlinkMacSystemFont,sans-serif}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
button{cursor:pointer;font-family:inherit}
input,textarea,select{font-family:inherit;font-size:1rem}

.app-layout{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--sidebar-bg);color:white;padding:1.5rem;display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh;z-index:100;transition:background .3s,left .3s ease,right .3s ease}
[dir="rtl"] .sidebar{left:auto;right:0}
.sidebar .logo{font-size:1.5rem;font-weight:700;margin-bottom:2rem;display:flex;align-items:center;gap:.5rem}
.sidebar nav{flex:1;display:flex;flex-direction:column;gap:.25rem;overflow-y:auto;padding-bottom:.5rem;scrollbar-width:thin}
.sidebar nav::-webkit-scrollbar{width:4px}
.sidebar nav::-webkit-scrollbar-track{background:transparent}
.sidebar nav::-webkit-scrollbar-thumb{background:rgba(255,255,255,0.2);border-radius:4px}
.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;border-radius:8px;color:var(--sidebar-text);transition:all .2s;font-size:.95rem}
.nav-item:hover,.nav-item.active{background:var(--sidebar-hover);color:var(--sidebar-text-active);text-decoration:none}
.nav-item .icon{font-size:1.2rem;width:24px;text-align:center;flex-shrink:0}

.main-content{flex:1;margin-left:260px;padding:2rem;max-width:calc(100vw - 260px);transition:margin .3s}
[dir="rtl"] .main-content{margin-left:0;margin-right:260px}

.menu-toggle{display:none;position:fixed;top:.75rem;inset-inline-start:.75rem;z-index:110;width:40px;height:40px;padding:10px 8px;background:var(--primary);border:none;border-radius:8px;cursor:pointer;flex-direction:column;justify-content:space-between;align-items:stretch;box-shadow:0 2px 8px rgba(0,0,0,0.15)}
.menu-toggle span{display:block;height:3px;background:white;border-radius:2px;transition:all .3s}
.menu-toggle.open span:nth-child(1){transform:translateY(8.5px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-8.5px) rotate(-45deg)}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(0,0,0,0.5);z-index:99;backdrop-filter:blur(2px)}
.sidebar-header{display:flex;align-items:center;justify-content:space-between}
.sidebar-close{display:none;background:none;border:none;color:white;font-size:1.8rem;line-height:1;padding:0 .25rem;cursor:pointer;opacity:.7}
.sidebar-close:hover{opacity:1}

@media(max-width:768px){
body{overflow-x:hidden}
.menu-toggle{display:flex}
.sidebar{transform:translateX(-100%);transition:transform .3s ease,box-shadow .3s ease}
[dir="rtl"] .sidebar{transform:translateX(100%)}
.sidebar.open{transform:translateX(0);box-shadow:4px 0 20px rgba(0,0,0,0.3)}
[dir="rtl"] .sidebar.open{box-shadow:-4px 0 20px rgba(0,0,0,0.3)}
.sidebar-overlay{display:block}
.sidebar-close{display:block}
.app-layout{max-width:100vw;overflow-x:hidden}
.main-content{margin-left:0!important;margin-right:0!important;max-width:100%;width:100%;padding:1rem;padding-top:4rem}
.main-content.blurred{filter:blur(1px);pointer-events:none}
}

.sidebar-footer{padding-top:1rem;border-top:1px solid rgba(255,255,255,0.2);margin-top:auto}
.sidebar-controls{display:flex;gap:.5rem;margin-bottom:.75rem}
.sidebar-controls button{flex:1;display:flex;align-items:center;justify-content:center;gap:.4rem;padding:.5rem;border:1px solid rgba(255,255,255,0.25);background:transparent;color:rgba(255,255,255,0.8);border-radius:6px;font-size:.8rem;transition:all .2s}
.sidebar-controls button:hover{background:rgba(255,255,255,0.1);color:white}
.user-info{display:flex;align-items:center;gap:.75rem;padding:.5rem}
.user-avatar{width:40px;height:40px;border-radius:50%;background:rgba(255,255,255,0.2);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:1rem;flex-shrink:0}
.user-name{font-weight:500;font-size:.9rem}
.user-role{font-size:.8rem;opacity:.7}
.sidebar-license{margin-top:.5rem;padding:.4rem .5rem;border-radius:6px;font-size:.8rem;font-weight:600;text-align:center;width:100%}
.sidebar-license.ok{background:rgba(102,187,106,0.2);color:#66BB6A}
.sidebar-license.warning{background:rgba(255,167,38,0.2);color:#FFA726}
.sidebar-license.critical{background:rgba(239,83,80,0.2);color:#EF5350}
.sidebar-license.expired{background:rgba(239,83,80,0.3);color:#EF5350}
.install-btn{margin-top:.5rem;padding:.5rem;border:1px solid rgba(255,255,255,0.3);background:rgba(255,255,255,0.1);color:white;border-radius:6px;font-size:.85rem;width:100%;cursor:pointer;transition:all .2s}
.install-btn:hover{background:rgba(255,255,255,0.2)}
.logout-btn{margin-top:.5rem;padding:.5rem;border:1px solid rgba(255,255,255,0.3);background:transparent;color:white;border-radius:6px;font-size:.85rem;width:100%;text-align:center;transition:all .2s}
.logout-btn:hover{background:rgba(255,255,255,0.1)}

.auth-lang-select{position:absolute;top:1rem;inset-inline-end:1rem;padding:.4rem .6rem;border:1px solid var(--border);border-radius:6px;background:var(--surface);color:var(--text);font-size:.85rem;cursor:pointer;z-index:10}
.lang-select{background:transparent;color:var(--sidebar-text);border:1px solid rgba(255,255,255,0.3);border-radius:6px;padding:.3rem .5rem;font-size:.85rem;cursor:pointer}
.lang-select option{color:#212121}
.password-wrap{position:relative}
.password-wrap .form-input{padding-inline-end:2.5rem}
.pw-toggle{position:absolute;inset-inline-end:.5rem;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;font-size:1.1rem;padding:0;line-height:1;color:var(--text-muted)}
.pw-toggle:hover{color:var(--text)}
.auth-logo{max-width:120px;margin:0 auto 1rem;display:block;border-radius:12px}
.sidebar-logo-img{width:32px;height:32px;border-radius:8px;object-fit:contain}

.auth-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--auth-gradient);padding:2rem}
.auth-card{background:var(--surface);border-radius:16px;padding:2.5rem;width:100%;max-width:440px;box-shadow:0 20px 60px rgba(0,0,0,0.15);transition:background .3s}
.auth-card h1{font-size:1.75rem;margin-bottom:.25rem}
.auth-card .subtitle{color:var(--text-secondary);margin-bottom:1.5rem}
.auth-card .logo{text-align:center;margin-bottom:1.5rem;font-size:2rem;font-weight:700;color:var(--primary)}

.form-group{margin-bottom:1rem}
.form-group label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.375rem;color:var(--text)}
.form-input,.form-select,.form-textarea{width:100%;padding:.75rem 1rem;border:1.5px solid var(--border);border-radius:8px;font-size:.95rem;transition:border-color .2s;background:var(--input-bg);color:var(--text)}
.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary)}
.form-textarea{min-height:100px;resize:vertical}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem}

.btn{padding:.75rem 1.5rem;border:none;border-radius:8px;font-size:.95rem;font-weight:500;transition:all .2s;display:inline-flex;align-items:center;gap:.5rem}
.btn-primary{background:var(--primary);color:white;width:100%;justify-content:center}
.btn-primary:hover{background:var(--primary-dark)}
.btn-primary:disabled{opacity:.6;cursor:not-allowed}
.btn-secondary{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-secondary:hover{background:rgba(99,181,246,0.1)}
.btn-danger{background:var(--danger);color:white}
.btn-danger:hover{opacity:.9}
.btn-sm{padding:.5rem 1rem;font-size:.85rem}
.auth-link{text-align:center;margin-top:1.25rem;font-size:.9rem;color:var(--text-secondary)}
.auth-link a{font-weight:500}
.error{color:var(--danger);font-size:.85rem;margin-top:.25rem}
.error-box{background:rgba(239,83,80,0.15);color:var(--danger);padding:.75rem 1rem;border-radius:8px;margin-bottom:1rem;font-size:.9rem}

.card{background:var(--surface);border-radius:12px;padding:1.5rem;box-shadow:var(--card-shadow);margin-bottom:1rem;transition:background .3s,box-shadow .3s}
.card-title{font-size:1.1rem;font-weight:600;margin-bottom:1rem;color:var(--text)}
.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}
.stat-card{background:var(--surface);border-radius:12px;padding:1.5rem;box-shadow:var(--card-shadow);text-align:center;transition:background .3s}
.stat-card .stat-value{font-size:2rem;font-weight:700}
.stat-card .stat-label{font-size:.85rem;color:var(--text-secondary);margin-top:.25rem}
.stat-blue{border-top:3px solid var(--primary)}
.stat-green{border-top:3px solid var(--success)}
.stat-orange{border-top:3px solid var(--warning)}
.stat-red{border-top:3px solid var(--danger)}

.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem;gap:1rem;flex-wrap:wrap}
.page-header .btn,.page-header button{flex-shrink:0}
[dir="rtl"] .page-header{flex-direction:row-reverse}
.page-header h1{font-size:1.5rem;font-weight:700}
.table-container{overflow-x:auto}
table{width:100%;border-collapse:collapse}
th,td{padding:.75rem 1rem;text-align:start;border-bottom:1px solid var(--border)}
th{font-weight:600;font-size:.85rem;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}
tr:hover{background:var(--table-hover)}

.badge{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.8rem;font-weight:500}
.badge-present{background:rgba(102,187,106,0.2);color:var(--success)}
.badge-absent{background:rgba(239,83,80,0.2);color:var(--danger)}
.badge-late{background:rgba(255,167,38,0.2);color:var(--warning)}
.badge-excused{background:rgba(66,165,245,0.2);color:var(--primary-light)}
.badge-teacher{background:var(--badge-teacher-bg);color:var(--badge-teacher-text)}
.badge-student{background:var(--badge-student-bg);color:var(--badge-student-text)}
.badge-parent{background:var(--badge-parent-bg);color:var(--badge-parent-text)}

.content-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
@media(max-width:768px){.content-grid{grid-template-columns:1fr}}
.loading{display:flex;justify-content:center;align-items:center;min-height:200px}
.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.charts-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1.5rem}
.chart-card{background:var(--surface);border-radius:12px;padding:1.5rem;box-shadow:var(--card-shadow)}
.chart-card .card-title{margin-bottom:1rem}
.chart-card canvas{max-height:250px}
@media(max-width:768px){.charts-grid{grid-template-columns:1fr}}

.day-chips{display:flex;gap:.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.day-chip{padding:.5rem 1rem;border:1.5px solid var(--border);border-radius:20px;font-size:.85rem;cursor:pointer;transition:all .2s;background:var(--surface);color:var(--text)}
.day-chip:hover{border-color:var(--primary);color:var(--primary)}
.day-chip.active{background:var(--primary);color:white;border-color:var(--primary)}

.notification-item{padding:1rem;border-bottom:1px solid var(--border);display:flex;gap:1rem;align-items:flex-start}
.notification-item:last-child{border-bottom:none}
.notification-item.unread{background:var(--unread-bg)}
.notification-icon{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;flex-shrink:0}
.notification-content{flex:1}
.notification-title{font-weight:600;margin-bottom:.25rem}
.notification-message{font-size:.9rem;color:var(--text-secondary)}
.notification-time{font-size:.8rem;color:var(--text-muted);margin-top:.25rem}

.student-list{display:flex;flex-direction:column;gap:.5rem}
.student-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem 1rem;background:var(--surface);border-radius:8px;border:1px solid var(--border)}
.student-item .name{font-weight:500}
[dir="rtl"] .student-item .name{text-align:right}

.fab{position:fixed;bottom:2rem;inset-inline-end:2rem;width:56px;height:56px;border-radius:50%;background:var(--primary);color:white;border:none;font-size:1.5rem;box-shadow:0 4px 12px rgba(99,181,246,0.3);transition:all .2s;display:flex;align-items:center;justify-content:center}
.fab:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(99,181,246,0.4)}

.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.5);display:flex;align-items:center;justify-content:center;z-index:1000;padding:1rem}
.modal-content{background:var(--surface);border-radius:16px;padding:2rem;width:100%;max-width:500px;max-height:90vh;overflow-y:auto;transition:background .3s}
.modal-content h2{margin-bottom:1.25rem}
.modal-actions{display:flex;gap:.75rem;margin-top:1.5rem;justify-content:flex-end}
[dir="rtl"] .modal-actions{justify-content:flex-start}

.empty-state{text-align:center;padding:3rem 1rem;color:var(--text-secondary)}
.empty-state .icon{font-size:3rem;margin-bottom:1rem;opacity:.3}

.search-bar{width:100%;padding:.75rem 1rem;border:1.5px solid var(--border);border-radius:8px;margin-bottom:1rem;font-size:.95rem;background:var(--input-bg);color:var(--text)}
.search-bar:focus{outline:none;border-color:var(--primary)}

[dir="rtl"] .page-header h1{text-align:right}
[dir="rtl"] h1,[dir="rtl"] h2,[dir="rtl"] h3{text-align:right}
[dir="rtl"] .form-row{direction:rtl}
[dir="rtl"] table th,[dir="rtl"] table td{text-align:right}
[dir="rtl"] .stats-grid{direction:rtl}
[dir="rtl"] .student-item{flex-direction:row-reverse}
[dir="rtl"] .notification-item{flex-direction:row-reverse}
[dir="rtl"] .modal-actions{flex-direction:row-reverse}
[dir="rtl"] .content-grid{direction:rtl}
[dir="rtl"] .day-chips{direction:rtl}

.schedule-grid{display:grid;grid-template-columns:80px repeat(5,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:8px;overflow:hidden}
.schedule-header{background:var(--surface);padding:.75rem;text-align:center;font-weight:600;font-size:.85rem}
.day-label{color:var(--text)}
.time-slot{background:var(--surface);padding:.5rem;text-align:center;font-size:.8rem;color:var(--text-secondary);display:flex;align-items:center;justify-content:center}
.day-slot{background:var(--surface);min-height:60px;padding:.25rem}
.day-slot.has-lesson{background:var(--surface-hover)}
.lesson-card{background:var(--primary-light);color:white;border-radius:6px;padding:.35rem .5rem;font-size:.75rem;cursor:default}
.lesson-card .lesson-title{font-weight:600;margin-bottom:.15rem}
.lesson-card .lesson-time{opacity:.85;font-size:.7rem}
.lesson-card .lesson-location{opacity:.7;font-size:.65rem;margin-top:.1rem}
[data-theme="dark"] .lesson-card{background:var(--primary-dark)}

@media print{
body{background:white}
.sidebar,.sidebar-controls,.sidebar-footer,.page-header button,.no-print{display:none!important}
.main-content{margin:0!important;max-width:100%!important;padding:0!important}
.app-layout{display:block}
.schedule-grid{break-inside:avoid}
.lesson-card{background:#1976D2!important;color:white!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
.day-slot.has-lesson{background:#f0f2f5!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
.page-header h1{font-size:1.2rem}
}