:root{--primary-color: #667eea;--secondary-color: #764ba2;--success-color: #10b981;--danger-color: #ef4444;--warning-color: #f59e0b;--dark-bg: #0f172a;--dark-surface: #1e293b;--light-bg: #f8fafc;--light-surface: #ffffff;--text-primary: #1e293b;--text-secondary: #64748b;--border-color: #e2e8f0;--border-radius: 8px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1);--transition-fast: .15s ease-in-out;--transition-normal: .25s ease-in-out;--transition-slow: .35s ease-in-out}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background-color:var(--light-bg);color:var(--text-primary)}body{font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}@media (prefers-color-scheme: dark){:root{--dark-bg: #0f172a;--dark-surface: #1e293b;--text-primary: #f1f5f9;--text-secondary: #cbd5e1;--border-color: #334155}body{background-color:var(--dark-bg);color:var(--text-primary)}}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2;margin-bottom:.5rem}h1{font-size:2rem}h2{font-size:1.75rem}h3{font-size:1.5rem}h4{font-size:1.25rem}h5{font-size:1.125rem}h6{font-size:1rem}p{margin-bottom:1rem}a{color:var(--primary-color);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--secondary-color)}input,textarea,select{font-family:inherit;font-size:1rem;padding:.5rem;border:1px solid var(--border-color);border-radius:var(--border-radius);transition:border-color var(--transition-fast),box-shadow var(--transition-fast)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 3px #667eea1a}input::placeholder,textarea::placeholder{color:var(--text-secondary)}button{font-family:inherit;font-size:1rem;cursor:pointer;border:none;background:none;padding:0}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.flex{display:flex}.flex-center{display:flex;align-items:center;justify-content:center}.flex-between{display:flex;align-items:center;justify-content:space-between}.text-center{text-align:center}.text-right{text-align:right}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-4{margin-top:2rem}.mb-1{margin-bottom:.5rem}.mb-2{margin-bottom:1rem}.mb-4{margin-bottom:2rem}.px-2{padding:0 1rem}.py-2{padding:1rem 0}.hidden{display:none!important}.opacity-50{opacity:.5}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInDown{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn .3s ease-in-out}.slide-in-up{animation:slideInUp .3s ease-in-out}.slide-in-down{animation:slideInDown .3s ease-in-out}.spinner{display:inline-block;width:20px;height:20px;border:3px solid rgba(102,126,234,.1);border-top-color:var(--primary-color);border-radius:50%;animation:spin .8s linear infinite}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--light-bg)}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}@media (prefers-color-scheme: dark){::-webkit-scrollbar-track{background:var(--dark-bg)}}