:root{--primary-color: #2563eb;--primary-hover: #1d4ed8;--success-color: #10b981;--danger-color: #ef4444;--bg-color: #f8fafc;--card-bg: #ffffff;--text-main: #0f172a;--text-muted: #64748b;--border-color: #e2e8f0;--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--border-radius: 12px;--border-radius-sm: 8px;--box-shadow: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-color);color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;height:100vh;max-width:600px;margin:0 auto;background-color:var(--bg-color);position:relative;overflow:hidden}.main-content{flex:1;overflow-y:auto;padding:var(--spacing-md);padding-bottom:calc(60px + var(--spacing-md))}h1,h2,h3{font-weight:600;color:var(--text-main)}h1{font-size:1.5rem}h2{font-size:1.25rem}h3{font-size:1.1rem}p{color:var(--text-muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--border-radius-sm);font-weight:500;border:none;cursor:pointer;transition:all .2s;font-size:1rem;min-height:48px}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover)}.btn-secondary{background-color:#fff;color:var(--text-main);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:var(--bg-color)}.btn-danger{background-color:var(--danger-color);color:#fff}.btn-block{width:100%;padding:12px}.form-group{margin-bottom:var(--spacing-md)}.form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:var(--spacing-xs);color:var(--text-main)}.form-input,.form-select,.form-textarea{width:100%;padding:12px 16px;border:1px solid var(--border-color);border-radius:var(--border-radius-sm);font-size:1rem;font-family:inherit;transition:border-color .2s;min-height:48px}.form-input:focus,.form-select:focus,.form-textarea:focus{outline:none;border-color:var(--primary-color);box-shadow:0 0 0 2px #2563eb1a}.card{background:var(--card-bg);border-radius:var(--border-radius);padding:var(--spacing-md);box-shadow:var(--box-shadow);margin-bottom:var(--spacing-md)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-between{justify-content:space-between}.justify-center{justify-content:center}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.text-center{text-align:center}.text-sm{font-size:.875rem}.text-xs{font-size:.75rem}.font-bold{font-weight:700}.text-primary{color:var(--primary-color)}.spinner{border:3px solid rgba(0,0,0,.1);width:24px;height:24px;border-radius:50%;border-left-color:var(--primary-color);animation:spin 1s ease infinite;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes scaleIn{0%{transform:scale(.88);opacity:0}to{transform:scale(1);opacity:1}}