*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--font-body: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "Fira Code", "JetBrains Mono", monospace;--bg-deep: #050a0e;--bg-surface: #0a1118;--bg-elevated: #111d28;--green-bright: #34d399;--green-mid: #10b981;--green-dark: #065f46;--text-primary: #e8f0f8;--text-secondary: #8899aa;--text-muted: #556677;--border-subtle: rgba(136, 153, 170, .15);--border-accent: rgba(52, 211, 153, .2);--radius-md: 12px;--color-primary: #10b981;--color-danger: #f87171}body.theme-light{--bg-deep: #f5f7fa;--bg-surface: #ffffff;--bg-elevated: #f0f2f5;--green-bright: #047e58;--green-mid: #059669;--green-dark: #d1fae5;--text-primary: #1a1a2e;--text-secondary: #4a5568;--text-muted: #5c708c;--border-subtle: rgba(0, 0, 0, .1);--border-accent: rgba(5, 150, 105, .15);--color-primary: #059669;--color-danger: #dc2626}html{-webkit-font-smoothing:antialiased}body{font-family:var(--font-body);font-size:14px;line-height:1.6;color:var(--text-primary);background:var(--bg-deep);min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}body:before{content:"";position:fixed;top:30%;left:50%;width:800px;height:800px;transform:translate(-50%,-50%);background:radial-gradient(ellipse,rgba(52,211,153,.06) 0%,transparent 70%);pointer-events:none;z-index:0}body.theme-light:before{background:radial-gradient(ellipse,rgba(5,150,105,.04) 0%,transparent 70%)}.auth-brand{display:flex;flex-direction:column;align-items:center;margin-bottom:28px}.auth-logo{width:72px;height:72px;margin-bottom:16px;filter:drop-shadow(0 4px 12px rgba(52,211,153,.15))}body.theme-light .auth-logo{filter:drop-shadow(0 4px 12px rgba(5,150,105,.1))}.auth-brand h1{font-size:26px;font-weight:700;letter-spacing:-.5px;background:linear-gradient(135deg,var(--text-primary),var(--green-bright));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:4px}.auth-brand .subtitle{color:var(--text-muted);font-size:13px;font-weight:500;letter-spacing:.3px}.auth-tagline{color:var(--text-secondary);font-size:12px;margin-top:6px;letter-spacing:.2px}.login-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:40px;width:100%;max-width:420px;position:relative;z-index:1;box-shadow:0 8px 40px #0003,0 0 0 1px var(--border-accent)}body.theme-light .login-card{box-shadow:0 8px 40px #0000000f,0 0 0 1px var(--border-accent)}.tab-bar{display:flex;gap:0;margin-bottom:24px;border:1px solid var(--border-subtle);border-radius:8px;overflow:hidden}.tab{flex:1;padding:10px;background:transparent;color:var(--text-muted);border:none;font-family:var(--font-body);font-size:13px;font-weight:500;cursor:pointer;transition:background .15s,color .15s}.tab:hover{color:var(--text-secondary)}.tab.active{background:var(--bg-elevated);color:var(--green-bright)}.form-group{margin-bottom:18px}.form-group label{display:block;font-size:12px;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px;font-weight:500}.form-group input{width:100%;padding:10px 14px;background:var(--bg-elevated);border:1px solid var(--border-subtle);border-radius:8px;color:var(--text-primary);font-family:var(--font-body);font-size:13px;outline:none;transition:border-color .2s}.form-group input[type=password]{font-family:var(--font-mono)}.form-group input:focus{border-color:var(--color-primary);box-shadow:0 0 0 2px #10b9811a}.remember-me{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);cursor:pointer;margin-bottom:16px;-webkit-user-select:none;user-select:none}.remember-me input[type=checkbox]{width:16px;height:16px;accent-color:var(--color-primary);cursor:pointer}.btn-login{width:100%;padding:12px;background:linear-gradient(135deg,var(--green-dark),var(--green-mid));color:#fff;border:none;border-radius:8px;font-family:var(--font-body);font-size:14px;font-weight:600;cursor:pointer;margin-top:8px;transition:filter .15s,transform .15s}.btn-login:hover{filter:brightness(1.1);transform:translateY(-1px)}.btn-login:active{transform:translateY(0)}.btn-login:disabled{opacity:.7;cursor:not-allowed;filter:none;transform:none}.btn-login .spinner{display:inline-block;width:16px;height:16px;border:2px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .6s linear infinite;vertical-align:middle;margin-right:6px}@keyframes spin{to{transform:rotate(360deg)}}.error-msg{color:var(--color-danger);font-size:13px;margin-top:12px;display:none}