:root{font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:var(--color-text);background-color:var(--color-bg);--color-bg: #ffffff;--color-bg-alt: #f8fafc;--color-text: #0f172a;--color-text-muted: #475569;--color-border: #e2e8f0;--color-border-strong: #cbd5e1;--color-accent: #2563eb;--color-focus: #3b82f6;--color-success: #0d9488;--color-error: #dc2626;--color-warning: #d97706;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--shadow-card: 0 2px 4px -2px rgba(15,23,42,.06), 0 4px 12px -2px rgba(15,23,42,.05);--shadow-modal: 0 8px 24px -4px rgba(15,23,42,.12)}.dark{--color-bg: #0f172a;--color-bg-alt: #1e293b;--color-text: #f1f5f9;--color-text-muted: #94a3b8;--color-border: #334155;--color-border-strong: #475569;--shadow-card: 0 2px 4px -2px rgba(0,0,0,.5), 0 4px 12px -2px rgba(0,0,0,.4)}*{box-sizing:border-box}body{margin:0;min-height:100vh}a{color:inherit;text-decoration:none}button{font:inherit}.card{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 16px;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:background-color .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:#1d4ed8}.btn-primary:focus{outline:2px solid var(--color-focus);outline-offset:2px}.btn-secondary{background:transparent;color:var(--color-text);border-color:var(--color-border-strong)}.btn-secondary:hover{border-color:var(--color-text-muted);background:var(--color-bg-alt)}.btn-secondary:focus{outline:2px solid var(--color-focus);outline-offset:2px}.input{width:100%;height:52px;border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);color:var(--color-text);padding:0 14px}.input:focus{outline:2px solid var(--color-focus);outline-offset:2px}.label{font-size:12px;letter-spacing:.5px;text-transform:uppercase;color:var(--color-text-muted)}