:root{--color-primary: #1b4332;--color-secondary: #40916c;--color-bg: #f8f9fa;--color-surface: #ffffff;--color-text: #212529;--color-error: #dc3545;--shadow-sm: 0 2px 4px rgba(0,0,0,.05);--shadow-md: 0 4px 6px rgba(0,0,0,.1);--border-radius: 8px;--color-border: #ddd;--color-border-light: #eee;--color-text-muted: #666}[data-theme=dark]{--color-primary: #52b788;--color-secondary: #74c69d;--color-bg: #121212;--color-surface: #1e1e1e;--color-text: #e9ecef;--shadow-sm: 0 2px 4px rgba(0,0,0,.2);--color-border: #444;--color-border-light: #333;--color-text-muted: #aaa}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.6;transition:background-color .3s,color .3s}.container{max-width:1000px;margin:0 auto;padding:2rem 1rem}.card{background:var(--color-surface);border-radius:var(--border-radius);padding:2rem;box-shadow:var(--shadow-sm);margin-bottom:2rem}.btn{background:var(--color-primary);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:4px;cursor:pointer;font-weight:600;transition:background .2s,color .2s,border-color .2s}.btn:hover{background:var(--color-secondary)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-outline{background:transparent;color:var(--color-text);border:1px solid #ccc;border-radius:4px;cursor:pointer;font-weight:600;transition:background-color .2s}.btn-outline:hover{background:#0000000d}[data-theme=dark] .btn-outline:hover{background:#ffffff14}.btn-icon{padding:0;background:transparent;color:var(--color-text);border:1px solid #ccc;border-radius:50%;width:40px;height:40px;display:flex;align-items:center;justify-content:center;font-size:1.2rem;cursor:pointer;transition:background-color .2s}.btn-icon:hover{background:#0000000d}[data-theme=dark] .btn-icon:hover{background:#ffffff14}.input-field{padding:.5rem;border:1px solid #ccc;border-radius:4px;background:var(--color-surface);color:var(--color-text)}.markdown-body h1,.markdown-body h2,.markdown-body h3{margin-top:1.5rem;margin-bottom:.8rem;font-weight:600;color:var(--color-primary)}.markdown-body h1{font-size:1.5rem;border-bottom:1px solid var(--color-border-light);padding-bottom:.3rem}.markdown-body h2{font-size:1.3rem}.markdown-body h3{font-size:1.1rem}.markdown-body p{margin-bottom:1rem}.markdown-body ul,.markdown-body ol{margin-left:1.5rem;margin-bottom:1rem}.markdown-body li{margin-bottom:.25rem}.markdown-body code{background:var(--color-bg);padding:.2rem .4rem;border-radius:4px;font-size:.9rem;font-family:monospace;color:var(--color-primary)}.markdown-body pre{background:var(--color-bg);padding:1rem;border-radius:var(--border-radius);overflow-x:auto;margin-bottom:1rem}.markdown-body pre code{padding:0;background:transparent;color:inherit}.markdown-body blockquote{border-left:4px solid var(--color-secondary);padding-left:1rem;color:var(--color-text-muted);margin-bottom:1rem;font-style:italic}@keyframes pulse{0%{opacity:.6}50%{opacity:1}to{opacity:.6}}.pulse{animation:pulse 1.5s infinite ease-in-out}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spinner{width:24px;height:24px;border:3px solid rgba(64,145,108,.2);border-top-color:var(--color-secondary);border-radius:50%;animation:spin 1s infinite linear}