@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap";
:root{--primary:#1976d2;--primary-light:#42a5f5;--primary-dark:#1565c0;--secondary:#00897b;--secondary-light:#26a69a;--accent:#ff6f00;--accent-light:#ffa726;--success:#4caf50;--success-light:#66bb6a;--warning:#ffc107;--warning-light:#ffd54f;--error:#f44336;--error-light:#ef5350;--info:#2196f3;--bg:#f5f5f5;--bg-alt:#eee;--surface:#fff;--surface-alt:#fafafa;--border:#e0e0e0;--border-light:#f0f0f0;--text:#424242;--text-secondary:#757575;--text-muted:#9e9e9e;--text-inverse:#fff;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 4px 12px #0000001a;--shadow-lg:0 8px 24px #0000001f;--shadow-xl:0 16px 48px #00000026;--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--radius-full:50%;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s ease;--font-sans:"Inter", "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono:"JetBrains Mono", "Fira Code", monospace;--modal-bg:#fff;--modal-text:#333;--modal-border:#e0e0e0;--input-bg:#f5f5f5;--input-border:#ccc;--input-text:#333;--sidebar-width:260px;--sidebar-collapsed-width:72px;--header-height:64px;--lesson-matematik:#e91e63;--lesson-turkce:#9c27b0;--lesson-fizik:#2196f3;--lesson-kimya:#ff9800;--lesson-biyoloji:#4caf50;--lesson-tarih:#795548;--lesson-cografya:#009688;--lesson-felsefe:#607d8b;--lesson-geometri:#f44336;--lesson-edebiyat:#673ab7;--lesson-default:#546e7a}[data-theme=dark]{--primary:#42a5f5;--primary-light:#64b5f6;--primary-dark:#1e88e5;--secondary:#26a69a;--accent:#ffa726;--bg:#121212;--bg-alt:#1a1a2e;--surface:#1e1e2e;--surface-alt:#252540;--border:#2d2d44;--border-light:#363654;--text:#e0e0e0;--text-secondary:#b0b0b0;--text-muted:gray;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 24px #00000080;--modal-bg:#1a1a1a;--modal-text:#fff;--modal-border:#333;--input-bg:#252525;--input-border:#333;--input-text:#fff}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}body{font-family:var(--font-sans);background-color:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;width:100%;min-height:100vh;line-height:1.6;overflow-x:hidden}img,video{max-width:100%;height:auto}a{color:var(--primary);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--primary-light)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-alt)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.glass{-webkit-backdrop-filter:blur(12px);background:#ffffffb3;border:1px solid #fff3}[data-theme=dark] .glass{background:#1e1e2eb3;border:1px solid #ffffff0f}.gradient-primary{background:linear-gradient(135deg, var(--primary), var(--primary-light))}.gradient-accent{background:linear-gradient(135deg, var(--accent), var(--warning))}.gradient-success{background:linear-gradient(135deg, var(--secondary), var(--success))}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInLeft{0%{opacity:0;transform:translate(-16px)}to{opacity:1;transform:translate(0)}}@keyframes slideInRight{0%{opacity:0;transform:translate(16px)}to{opacity:1;transform:translate(0)}}@keyframes scaleIn{0%{opacity:0;transform:scale(.95)}to{opacity:1;transform:scale(1)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shimmer{0%{background-position:-200% 0}to{background-position:200% 0}}.animate-fade-in{animation:.4s ease-out fadeIn}.animate-slide-in{animation:.3s ease-out slideInLeft}.animate-scale-in{animation:.3s ease-out scaleIn}.skeleton{background:linear-gradient(90deg, var(--border-light) 25%, var(--border) 50%, var(--border-light) 75%);border-radius:var(--radius-sm);background-size:200% 100%;animation:1.5s linear infinite shimmer}input,textarea,select{font-family:var(--font-sans);border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);transition:all var(--transition-fast);outline:none;width:100%;padding:10px 14px;font-size:14px}input:focus,textarea:focus,select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #1976d226}input::placeholder,textarea::placeholder{color:var(--text-muted)}select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23757575' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");background-position:right 12px center;background-repeat:no-repeat;padding-right:36px}.btn{font-family:var(--font-sans);border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;border:none;justify-content:center;align-items:center;gap:8px;padding:10px 20px;font-size:14px;font-weight:600;text-decoration:none;display:inline-flex}.btn svg{flex-shrink:0}.btn:active{transform:scale(.97)}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-md)}.btn-secondary{background:var(--secondary);color:#fff}.btn-secondary:hover{background:var(--secondary-light)}.btn-accent{background:var(--accent);color:#fff}.btn-accent:hover{background:var(--accent-light)}.btn-success{background:var(--success);color:#fff}.btn-success:hover{background:var(--success-light)}.btn-danger{background:var(--error);color:#fff}.btn-danger:hover{background:var(--error-light)}.btn-ghost{color:var(--text);border:1.5px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--bg-alt);border-color:var(--text-muted)}.btn-sm{padding:6px 14px;font-size:13px}.btn-lg{padding:14px 28px;font-size:16px}.btn-icon{border-radius:var(--radius-full);width:36px;height:36px;padding:8px}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);transition:all var(--transition-normal);padding:20px}.card:hover{box-shadow:var(--shadow-md)}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{color:var(--text);font-size:16px;font-weight:700}.stat-card{border-radius:var(--radius-md);color:#fff;flex-direction:column;gap:8px;padding:20px;display:flex;position:relative;overflow:hidden}.stat-card:before{content:"";border-radius:var(--radius-full);background:#ffffff1a;width:80px;height:80px;position:absolute;top:-20px;right:-20px}.stat-card .stat-label{opacity:.85;font-size:13px;font-weight:500}.stat-card .stat-value{letter-spacing:-.5px;font-size:28px;font-weight:800}.stat-card .stat-icon{opacity:.3;font-size:28px;position:absolute;top:16px;right:16px}.table-container{border-radius:var(--radius-md);border:1px solid var(--border);overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}thead th{background:var(--primary);color:#fff;text-align:left;white-space:nowrap;padding:12px 16px;font-weight:600}tbody td{border-bottom:1px solid var(--border-light);padding:10px 16px}tbody tr:hover{background:var(--surface-alt)}tbody tr:last-child td{border-bottom:none}.badge{border-radius:999px;align-items:center;gap:4px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.badge-success{color:var(--success);background:#4caf501f}.badge-warning{color:#f57f17;background:#ffc10726}.badge-error{color:var(--error);background:#f443361f}.badge-info{color:var(--info);background:#2196f31f}.progress-bar{background:var(--border-light);border-radius:4px;width:100%;height:8px;overflow:hidden}.progress-bar .progress-fill{height:100%;transition:width var(--transition-slow);background:linear-gradient(90deg, var(--primary), var(--primary-light));border-radius:4px}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;background:#00000080;justify-content:center;align-items:center;animation:.2s fadeIn;display:flex;position:fixed;inset:0}.modal-content{background:var(--surface);border-radius:var(--radius-lg);width:90%;max-width:560px;max-height:85vh;box-shadow:var(--shadow-xl);padding:28px;animation:.25s scaleIn;overflow-y:auto}.modal-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.modal-title{font-size:18px;font-weight:700}.tabs{border-bottom:2px solid var(--border);white-space:nowrap;scrollbar-width:none;gap:0;margin-bottom:20px;display:flex;overflow-x:auto}.tabs::-webkit-scrollbar{display:none}.tab{color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);background:0 0;border:none;border-bottom:2px solid #0000;margin-bottom:-2px;padding:10px 20px;font-size:14px;font-weight:500}.tab:hover{color:var(--text)}.tab.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}.toast-container{z-index:9999;flex-direction:column;gap:10px;display:flex;position:fixed;top:20px;right:20px}.toast{border-radius:var(--radius-sm);color:#fff;box-shadow:var(--shadow-lg);align-items:center;gap:10px;min-width:280px;padding:12px 20px;font-size:14px;font-weight:500;animation:.3s slideInRight;display:flex}.toast-success{background:var(--success)}.toast-error{background:var(--error)}.toast-warning{background:var(--warning);color:#333}.toast-info{background:var(--info)}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.animate-spin,.spinner{animation:1s linear infinite spin}.flex-center{justify-content:center;align-items:center;display:flex}.text-center{text-align:center}.text-muted{color:var(--text-muted)}@media (max-width:768px){.stat-card .stat-value{font-size:22px}.card{padding:16px}.modal-content{width:95%;padding:20px}.btn{white-space:normal;text-align:center;padding:8px 16px;font-size:13px}div[class*=actions],div[class*=buttons],div[class*=footer],div[class*=header]{flex-wrap:wrap!important;gap:8px!important}}