:root{--color-white: #FFFFFF;--color-cream: #FAF8F5;--color-gray-50: #F9FAFB;--color-gray-100: #F3F4F6;--color-gray-200: #E5E7EB;--color-gray-300: #D1D5DB;--color-gray-400: #9CA3AF;--color-gray-500: #6B7280;--color-gray-600: #4B5563;--color-gray-700: #374151;--color-gray-800: #1F2937;--color-gray-900: #111827;--color-charcoal: #1C1C1E;--color-black: #0A0A0B;--color-gold: #C4961A;--color-gold-light: #D4A91A;--color-gold-dark: #A67C15;--color-gold-muted: rgba(196, 150, 26, .1);--color-year11: #8B1A1A;--color-year11-light: #A82828;--color-year12: #1E3A8A;--color-year12-light: #2563EB;--color-primary: #8B1A1A;--color-primary-hover: #A82828;--color-primary-light: rgba(139, 26, 26, .1);--color-success: #059669;--color-success-light: rgba(5, 150, 105, .1);--color-error: #DC2626;--color-error-light: rgba(220, 38, 38, .1);--font-display: "Playfair Display", Georgia, serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-size-xs: .75rem;--font-size-sm: .875rem;--font-size-base: 1rem;--font-size-lg: 1.125rem;--font-size-xl: 1.25rem;--font-size-2xl: 1.5rem;--font-size-3xl: 2rem;--font-size-4xl: 2.5rem;--font-size-5xl: 3.5rem;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .04);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .07), 0 2px 4px -1px rgba(0, 0, 0, .04);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .08), 0 4px 6px -2px rgba(0, 0, 0, .04);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .08), 0 10px 10px -5px rgba(0, 0, 0, .03);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .15);--shadow-gold: 0 4px 14px rgba(196, 150, 26, .25);--shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, .04);--glass-bg: rgba(255, 255, 255, .8);--glass-border: rgba(255, 255, 255, .5);--glass-blur: blur(20px);--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .2s cubic-bezier(.4, 0, .2, 1);--transition-slow: .3s cubic-bezier(.4, 0, .2, 1);--transition-slower: .5s cubic-bezier(.4, 0, .2, 1);--z-dropdown: 100;--z-sticky: 200;--z-navbar: 300;--z-modal: 400;--z-tooltip: 500}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);color:var(--color-gray-800);background-color:var(--color-cream);line-height:1.6;min-height:100vh;overflow-x:hidden}body:before{content:"";position:fixed;top:0;left:0;width:100%;height:100%;background:radial-gradient(ellipse at 20% 20%,rgba(196,150,26,.08) 0%,transparent 50%),radial-gradient(ellipse at 80% 80%,rgba(30,58,138,.06) 0%,transparent 50%),radial-gradient(ellipse at 50% 50%,rgba(139,26,26,.04) 0%,transparent 60%);pointer-events:none;z-index:-1;animation:gradientShift 20s ease-in-out infinite}@keyframes gradientShift{0%,to{opacity:1}50%{opacity:.7}}#root{min-height:100vh;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.2;color:var(--color-gray-900);letter-spacing:-.02em}h1{font-size:var(--font-size-4xl);font-weight:700}h2{font-size:var(--font-size-3xl)}h3{font-size:var(--font-size-2xl)}h4{font-size:var(--font-size-xl)}p{margin-bottom:var(--space-4)}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-primary-hover)}.navbar{position:sticky;top:0;z-index:var(--z-navbar);background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-bottom:1px solid rgba(255,255,255,.8);box-shadow:0 1px 20px #0000000a;transition:all var(--transition-slow)}.navbar:after{content:"";position:absolute;bottom:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--color-gold),transparent);opacity:.3}.navbar-content{display:flex;align-items:center;justify-content:space-between;height:72px}.navbar-brand{font-family:var(--font-display);font-size:var(--font-size-xl);font-weight:700;color:var(--color-gray-900);letter-spacing:-.02em;transition:all var(--transition-base);display:flex;align-items:center;gap:var(--space-3)}.navbar-brand:before{content:"✞";font-size:1.3rem;color:var(--color-year11);filter:drop-shadow(0 2px 4px rgba(139,26,26,.3))}.navbar-brand:hover{color:var(--color-primary);transform:translateY(-1px)}.navbar-nav{display:flex;align-items:center;gap:var(--space-2);list-style:none}.nav-link{position:relative;display:inline-flex;align-items:center;padding:var(--space-2) var(--space-4);font-size:var(--font-size-sm);font-weight:500;color:var(--color-gray-600);border-radius:var(--radius-lg);transition:all var(--transition-base);overflow:hidden}.nav-link:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--color-gold-muted),transparent);opacity:0;transition:opacity var(--transition-base)}.nav-link:hover{color:var(--color-gray-900)}.nav-link:hover:before{opacity:1}.nav-link.active{color:var(--color-primary);background:var(--color-primary-light);font-weight:600}.btn{position:relative;display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);font-family:var(--font-body);font-size:var(--font-size-sm);font-weight:600;letter-spacing:.01em;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);white-space:nowrap;overflow:hidden}.btn:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(255,255,255,.2),transparent);opacity:0;transition:opacity var(--transition-fast)}.btn:hover:before{opacity:1}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.btn-primary{background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-hover) 100%);color:var(--color-white);box-shadow:var(--shadow-md),0 2px 8px #1e3a8a40}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg),0 4px 12px #1e3a8a59}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--color-white);color:var(--color-gray-700);border:1px solid var(--color-gray-200);box-shadow:var(--shadow-sm)}.btn-secondary:hover:not(:disabled){background:var(--color-gray-50);border-color:var(--color-gray-300);transform:translateY(-1px);box-shadow:var(--shadow-md)}.btn-ghost{background-color:transparent;color:var(--color-gray-600)}.btn-ghost:hover:not(:disabled){background-color:var(--color-gray-100);color:var(--color-gray-900)}.toggle-group{display:flex;gap:0;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--color-gray-200)}.toggle-btn{padding:var(--space-3) var(--space-5);background:var(--color-white);border:none;color:var(--color-gray-600);font-size:var(--font-size-sm);font-weight:500;cursor:pointer;transition:all var(--transition-fast)}.toggle-btn:hover:not(.active){background:var(--color-gray-50);color:var(--color-gray-800)}.toggle-btn.active{background:var(--color-primary);color:var(--color-white);box-shadow:var(--shadow-sm)}.toggle-btn:first-child{border-right:1px solid var(--color-gray-200)}.btn-gold{background:linear-gradient(135deg,var(--color-gold) 0%,var(--color-gold-dark) 100%);color:var(--color-white);box-shadow:var(--shadow-gold)}.btn-gold:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 6px 20px #c4961a66}.btn-lg{padding:var(--space-4) var(--space-8);font-size:var(--font-size-base);border-radius:var(--radius-xl)}.btn-sm{padding:var(--space-2) var(--space-4);font-size:var(--font-size-xs)}.form-group{margin-bottom:var(--space-5)}.form-label{display:block;margin-bottom:var(--space-2);font-size:var(--font-size-sm);font-weight:600;color:var(--color-gray-700);letter-spacing:.02em}.form-input{width:100%;padding:var(--space-3) var(--space-4);font-family:inherit;font-size:var(--font-size-base);color:var(--color-gray-800);background-color:var(--color-white);border:1.5px solid var(--color-gray-200);border-radius:var(--radius-lg);transition:all var(--transition-base);box-shadow:var(--shadow-inner)}.form-input:focus{outline:none;border-color:var(--color-gold);box-shadow:0 0 0 4px var(--color-gold-muted),var(--shadow-inner)}.form-input::placeholder{color:var(--color-gray-400)}textarea.form-input{resize:vertical;min-height:120px}.card{position:relative;background:var(--color-white);border-radius:var(--radius-2xl);box-shadow:var(--shadow-md);padding:var(--space-8);transition:all var(--transition-slow);overflow:hidden}.card:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--color-gold),var(--color-primary),var(--color-gold));opacity:0;transition:opacity var(--transition-base)}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-xl)}.card:hover:before{opacity:1}.card-glass{background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--glass-border)}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-6)}.container-sm{max-width:640px}.container-md{max-width:768px}.page{flex:1;padding:var(--space-10) 0 var(--space-16);animation:pageEnter .5s ease-out}@keyframes pageEnter{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.page-header{margin-bottom:var(--space-10)}.page-title{font-size:var(--font-size-4xl);font-weight:700;color:var(--color-gray-900);margin-bottom:var(--space-2)}.page-subtitle{font-size:var(--font-size-lg);color:var(--color-gray-500);margin:0}.tabs{display:inline-flex;gap:var(--space-2);padding:var(--space-1);background:var(--color-white);border-radius:var(--radius-xl);box-shadow:var(--shadow-sm)}.tab{position:relative;padding:var(--space-3) var(--space-6);font-family:var(--font-body);font-size:var(--font-size-sm);font-weight:600;color:var(--color-gray-500);background:transparent;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base)}.tab:hover:not(.active){color:var(--color-gray-700);background:var(--color-gray-50)}.tab.active{color:var(--color-white);background:linear-gradient(135deg,var(--color-primary) 0%,var(--color-primary-hover) 100%);box-shadow:var(--shadow-md)}.tab-count{display:inline-flex;align-items:center;justify-content:center;min-width:1.5rem;height:1.5rem;margin-left:var(--space-2);padding:0 var(--space-2);font-size:var(--font-size-xs);font-weight:700;background:#fff3;border-radius:var(--radius-full)}.tab:not(.active) .tab-count{background:var(--color-gray-100);color:var(--color-gray-600)}.lessons-list{background:var(--color-white);border-radius:var(--radius-2xl);box-shadow:var(--shadow-lg);overflow:hidden}.lessons-table{width:100%;border-collapse:collapse}.lessons-table thead{background:linear-gradient(135deg,var(--color-gray-50),var(--color-white))}.lessons-table th{padding:var(--space-4) var(--space-6);font-size:var(--font-size-xs);font-weight:700;color:var(--color-gray-500);text-transform:uppercase;letter-spacing:.08em;text-align:left;border-bottom:2px solid var(--color-gray-100)}.lessons-table td{padding:var(--space-4) var(--space-6);vertical-align:middle;border-bottom:1px solid var(--color-gray-100);transition:background var(--transition-fast)}.lessons-table tbody tr{transition:all var(--transition-fast)}.lessons-table tbody tr:hover{background:linear-gradient(90deg,var(--color-gold-muted),transparent)}.lessons-table tbody tr:last-child td{border-bottom:none}.session-number{display:inline-flex;align-items:center;justify-content:center;width:2.5rem;height:2.5rem;font-size:var(--font-size-sm);font-weight:700;color:var(--color-primary);background:var(--color-primary-light);border-radius:var(--radius-lg);transition:all var(--transition-fast)}.lessons-table tbody tr:hover .session-number{background:var(--color-primary);color:var(--color-white);transform:scale(1.1)}.lesson-title-cell{display:flex;flex-direction:column;gap:var(--space-1)}.lesson-title{font-weight:600;color:var(--color-gray-900)}.lesson-subtitle{font-size:var(--font-size-sm);color:var(--color-gray-500)}.actions-cell{display:flex;justify-content:flex-end;gap:var(--space-2)}.auth-page{min-height:100vh;display:flex;position:relative;overflow:hidden}.auth-page:before{content:"";position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(ellipse at 30% 30%,rgba(196,150,26,.15) 0%,transparent 40%),radial-gradient(ellipse at 70% 70%,rgba(30,58,138,.12) 0%,transparent 40%),radial-gradient(ellipse at 50% 20%,rgba(139,26,26,.1) 0%,transparent 35%);animation:parallaxFloat 30s ease-in-out infinite;pointer-events:none}@keyframes parallaxFloat{0%,to{transform:translate(0) rotate(0)}25%{transform:translate(-3%,2%) rotate(1deg)}50%{transform:translate(2%,-2%) rotate(-1deg)}75%{transform:translate(-2%,-1%) rotate(.5deg)}}.auth-container{flex:1;display:flex;align-items:center;justify-content:center;padding:var(--space-8);position:relative;z-index:1}.auth-card{width:100%;max-width:420px;padding:var(--space-10);background:var(--glass-bg);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border-radius:var(--radius-2xl);border:1px solid rgba(255,255,255,.7);box-shadow:var(--shadow-2xl);animation:cardFloat 6s ease-in-out infinite}@keyframes cardFloat{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.auth-header{text-align:center;margin-bottom:var(--space-8)}.auth-logo{font-size:3rem;margin-bottom:var(--space-4);filter:drop-shadow(0 4px 8px rgba(196,150,26,.3));animation:logoGlow 3s ease-in-out infinite}@keyframes logoGlow{0%,to{filter:drop-shadow(0 4px 8px rgba(196,150,26,.3))}50%{filter:drop-shadow(0 4px 20px rgba(196,150,26,.5))}}.auth-title{font-size:var(--font-size-2xl);font-weight:700;color:var(--color-gray-900);margin-bottom:var(--space-2)}.auth-subtitle{font-size:var(--font-size-base);color:var(--color-gray-500)}.auth-divider{display:flex;align-items:center;gap:var(--space-4);margin:var(--space-6) 0;color:var(--color-gray-400);font-size:var(--font-size-sm)}.auth-divider:before,.auth-divider:after{content:"";flex:1;height:1px;background:linear-gradient(90deg,transparent,var(--color-gray-300),transparent)}.spinner{width:40px;height:40px;border:3px solid var(--color-gray-200);border-top-color:var(--color-gold);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.skeleton{background:linear-gradient(90deg,var(--color-gray-100) 25%,var(--color-gray-50) 50%,var(--color-gray-100) 75%);background-size:200% 100%;animation:skeleton 1.5s ease-in-out infinite;border-radius:var(--radius-md)}@keyframes skeleton{0%{background-position:200% 0}to{background-position:-200% 0}}.alert{padding:var(--space-4) var(--space-5);border-radius:var(--radius-lg);font-size:var(--font-size-sm);font-weight:500;margin-bottom:var(--space-4);animation:alertEnter .3s ease-out}@keyframes alertEnter{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.alert-error{background:var(--color-error-light);color:var(--color-error);border:1px solid rgba(220,38,38,.2)}.alert-success{background:var(--color-success-light);color:var(--color-success);border:1px solid rgba(5,150,105,.2)}.text-center{text-align:center}.text-sm{font-size:var(--font-size-sm)}.text-muted{color:var(--color-gray-500)}.mb-4{margin-bottom:var(--space-4)}.mb-6{margin-bottom:var(--space-6)}.mb-8{margin-bottom:var(--space-8)}.mt-4{margin-top:var(--space-4)}.mt-6{margin-top:var(--space-6)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-2{gap:var(--space-2)}.gap-3{gap:var(--space-3)}.gap-4{gap:var(--space-4)}.gap-6{gap:var(--space-6)}@media(max-width:768px){:root{--font-size-4xl: 2rem;--font-size-3xl: 1.75rem;--font-size-2xl: 1.375rem}.navbar-content{height:64px}.navbar-brand:before{display:none}.page{padding:var(--space-6) 0}.card{padding:var(--space-6);border-radius:var(--radius-xl)}.auth-card{padding:var(--space-6);margin:var(--space-4)}.lessons-table th,.lessons-table td{padding:var(--space-3) var(--space-4)}}.preview-container{background:var(--color-white);border-radius:var(--radius-2xl);box-shadow:var(--shadow-xl);overflow:hidden;animation:previewEnter .5s ease-out}@keyframes previewEnter{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}.preview-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-6);background:linear-gradient(135deg,var(--color-gray-50),var(--color-white));border-bottom:1px solid var(--color-gray-100)}.preview-body{padding:var(--space-8);max-height:70vh;overflow-y:auto}.preview-section{margin-bottom:var(--space-8);padding-bottom:var(--space-8);border-bottom:1px solid var(--color-gray-100)}.preview-section:last-child{margin-bottom:0;padding-bottom:0;border-bottom:none}.preview-section-title{font-family:var(--font-display);font-size:var(--font-size-lg);font-weight:600;color:var(--color-gold-dark);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-4);display:flex;align-items:center;gap:var(--space-2)}.preview-section-title:before{content:"";width:4px;height:1.2em;background:var(--color-gold);border-radius:2px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-gray-100);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb{background:var(--color-gray-300);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-gray-400)}.theme-group{background:var(--color-white);border-radius:var(--radius-xl);padding:var(--space-6);margin-bottom:var(--space-4);border:1px solid var(--color-gray-200);transition:all var(--transition-base)}.theme-group:hover{border-color:var(--color-gold);box-shadow:var(--shadow-md)}.progress-bar{height:6px;background:var(--color-gray-100);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--color-gold),var(--color-primary));border-radius:var(--radius-full);transition:width var(--transition-slow)}.status-pending{color:var(--color-gray-400)}.status-generating{color:var(--color-gold)}.status-completed{color:var(--color-success)}.status-error{color:var(--color-error)}::selection{background:var(--color-gold-muted);color:var(--color-gray-900)}::-moz-selection{background:var(--color-gold-muted);color:var(--color-gray-900)}@media(max-width:768px){.lessons-table{display:block;overflow-x:auto;-webkit-overflow-scrolling:touch}.lessons-table table{min-width:600px}.lessons-table th,.lessons-table td{padding:var(--space-2) var(--space-3);font-size:var(--font-size-sm)}.page-header{flex-direction:column;gap:var(--space-4);text-align:center}.page-header .btn{width:100%}.header-actions{flex-wrap:wrap;justify-content:center}.container{padding-left:var(--space-3);padding-right:var(--space-3)}.mobile-lesson-card{display:block;background:var(--color-white);border-radius:var(--radius-lg);padding:var(--space-4);margin-bottom:var(--space-3);box-shadow:var(--shadow-sm)}.mobile-lesson-card .lesson-title{font-weight:600;font-size:var(--font-size-base);margin-bottom:var(--space-2)}.mobile-lesson-card .lesson-actions{display:flex;gap:var(--space-2);margin-top:var(--space-3);flex-wrap:wrap}.mobile-lesson-card .btn{flex:1;min-width:80px;text-align:center}}