:root {
    --brand:#0d3b66;--brand-dim:#0a2d4f;--brand-fg:#FFFFFF;--brand-subtle:rgba(13,59,102,0.09);--brand-border:rgba(13,59,102,0.20);
    --accent:#10B981;--positive:#22C55E;--negative:#F87171;--warning:#FBBF24;--info:#60A5FA;
    --ring:rgba(13,59,102,0.25);
    --bg-root:#1E2329;--bg-surface:#252B33;--bg-card:#2A3140;--bg-card-hover:#2F3749;--bg-input:#1E2329;
    --text-primary:#F0F2F5;--text-secondary:#8C95A6;--text-muted:#4E5A6B;
    --border:rgba(255,255,255,0.07);--border-hover:rgba(255,255,255,0.13);
    --link-color:#60a5fa;--link-hover:#93c5fd;
    --radius-md:10px;--radius-lg:14px;--radius-xl:18px;--radius-2xl:24px;
}
[data-theme="light"] {
    --bg-root:#F4F2EE;--bg-card:#FFFFFF;--bg-card-hover:#F5F3F0;--bg-input:#FFFFFF;
    --text-primary:#1A1F2B;--text-secondary:#5A6378;--text-muted:#8C95A6;
    --border:rgba(30,35,41,0.10);--border-hover:rgba(30,35,41,0.20);
    --brand:#0d3b66;--brand-dim:#0a2d4f;
    --link-color:#0d3b66;--link-hover:#0a2d4f;
}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:'DM Sans','Inter',sans-serif;background:var(--bg-root);color:var(--text-primary);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px;-webkit-font-smoothing:antialiased;transition:background 0.3s,color 0.3s}
.auth-wrap{width:100%;max-width:900px;display:flex;border-radius:var(--radius-2xl);overflow:hidden;box-shadow:0 24px 80px rgba(0,0,0,0.45);border:1px solid var(--border)}
.auth-wrap-single{max-width:480px;flex-direction:column;padding:44px 40px;background:var(--bg-card)}
.auth-left{flex:1;background:var(--bg-card);padding:48px 44px;display:flex;flex-direction:column;justify-content:center}
.auth-right{flex:1;background:linear-gradient(135deg,#1a1f2e 0%,#252b3d 100%);padding:48px 40px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border-left:1px solid var(--border);position:relative}
.auth-logo{display:flex;align-items:center;gap:10px;margin-bottom:28px}
.auth-wrap-single .auth-logo{justify-content:center}
.auth-logo img{width:40px;height:40px;border-radius:10px}
.auth-logo span{font-size:22px;font-weight:800;letter-spacing:-.5px;font-family:'Sora',sans-serif}
.brand{color:var(--brand)}
h1{font-size:24px;font-weight:700;font-family:'Sora',sans-serif;margin-bottom:6px;color:var(--text-primary)}
.auth-wrap-single h1{text-align:center}
.sub{font-size:13px;color:var(--text-secondary);margin-bottom:28px}
.auth-wrap-single .sub{text-align:center}
.form-group{display:flex;flex-direction:column;gap:6px;margin-bottom:16px}
.form-label{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--text-secondary)}
.form-input{width:100%;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:14px;background:var(--bg-input);color:var(--text-primary);font-family:inherit;outline:none;transition:all .15s}
.form-input:focus{border-color:var(--brand);box-shadow:0 0 0 3px var(--ring)}
.form-input::placeholder{color:var(--text-muted)}
.form-input.error{border-color:var(--negative)}
.error-text{font-size:11px;color:var(--negative);margin-top:4px}
.password-wrap{position:relative}
.password-toggle{position:absolute;right:10px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-muted);cursor:pointer;padding:6px;border-radius:6px}
.password-toggle:hover{color:var(--text-primary)}
.flex-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.remember-label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-secondary);cursor:pointer}
.remember-label span{color:var(--text-secondary)}
.forgot-link{font-size:12px;color:var(--link-color);text-decoration:none;font-weight:600}
.forgot-link:hover{text-decoration:underline;color:var(--link-hover)}
.btn-submit{width:100%;padding:13px;border-radius:var(--radius-md);border:none;font-weight:600;font-size:14px;cursor:pointer;transition:all .15s;background:var(--brand);color:var(--brand-fg);font-family:'Sora',sans-serif;display:flex;align-items:center;justify-content:center;gap:8px;margin-top:4px}
.btn-submit:hover{opacity:0.9;transform:translateY(-1px)}
.btn-submit:disabled{opacity:0.5;cursor:not-allowed;transform:none}
.auth-footer{text-align:center;margin-top:20px;font-size:13px;color:var(--text-secondary)}
.auth-footer a{color:var(--link-color);font-weight:600;text-decoration:none}
.auth-footer a:hover{text-decoration:underline;color:var(--link-hover)}
.banner{border-radius:var(--radius-md);padding:12px 16px;margin-bottom:20px;font-size:12px}
.banner-success{background:rgba(16,185,129,0.08);border:1px solid rgba(16,185,129,0.3);color:var(--positive)}
.banner-error{background:rgba(248,113,113,0.08);border:1px solid rgba(248,113,113,0.3);color:var(--negative)}
.banner p{color:inherit}
.puzzle-box{display:flex;align-items:center;gap:10px;background:rgba(13,59,102,0.05);border:1px solid var(--brand-border);border-radius:var(--radius-md);padding:10px 14px;margin-top:4px}
.puzzle-num{font-size:22px;font-weight:700;font-family:'JetBrains Mono',monospace;color:var(--brand)}
.puzzle-op{font-size:16px;color:var(--text-muted)}
.puzzle-input{width:70px!important;text-align:center;font-family:'JetBrains Mono',monospace;font-size:20px!important;font-weight:700;padding:8px!important}
.strength-bar{height:4px;border-radius:2px;margin-top:6px;transition:all .3s;background:var(--border)}
.strength-bar.weak{background:#ef4444;width:25%}.strength-bar.fair{background:#f59e0b;width:50%}.strength-bar.good{background:#10b981;width:75%}.strength-bar.strong{background:#22c55e;width:100%}
.strength-label{font-size:10px;color:var(--text-muted);margin-top:2px}
.otp-input{text-align:center;font-family:'JetBrains Mono',monospace;font-size:24px!important;letter-spacing:12px;padding:14px!important}
.pwa-info{text-align:left;width:100%}
.pwa-icon{margin-bottom:16px;text-align:center}
.pwa-info h3{font-size:17px;font-weight:700;font-family:'Sora',sans-serif;margin-bottom:6px;text-align:center;color:#f0f2f5}
.pwa-sub{font-size:12px;color:#cbd5e1;margin-bottom:24px;text-align:center;line-height:1.5}
.pwa-steps{display:flex;flex-direction:column;gap:14px;margin-bottom:20px}
.pwa-step{display:flex;align-items:flex-start;gap:10px;font-size:12px;color:#cbd5e1;line-height:1.5}
.pwa-step strong{color:#f0f2f5}
.pwa-step-num{width:26px;height:26px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:700;background:rgba(13,59,102,0.25);color:#93c5fd;flex-shrink:0}
.pwa-encrypt{font-size:11px;color:#94a3b8;text-align:center;border-top:1px solid rgba(255,255,255,0.1);padding-top:16px}
[data-theme="light"] .auth-right{background:linear-gradient(135deg, #e8e6e1 0%, #f5f3ee 100%)}
[data-theme="light"] .pwa-info h3{color:#1a1f2b}
[data-theme="light"] .pwa-sub{color:#5a6378}
[data-theme="light"] .pwa-step{color:#5a6378}
[data-theme="light"] .pwa-step strong{color:#1a1a1a}
[data-theme="light"] .pwa-step-num{background:rgba(13,59,102,0.12);color:#0d3b66}
[data-theme="light"] .pwa-encrypt{color:#8c95a6;border-top-color:rgba(0,0,0,0.08)}
[data-theme="light"] .modal-box{background:#fff;color:#1A1F2B}
[data-theme="light"] .btn-submit{background:#0d3b66;color:#fff}
.verify-icon{margin-bottom:20px;text-align:center}
.theme-toggle-btn{position:absolute;top:16px;right:16px;width:36px;height:36px;border-radius:50%;border:1px solid var(--border);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .15s;z-index:1}
.theme-toggle-btn:hover{border-color:var(--brand);color:var(--brand)}
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,0.75);display:flex;align-items:center;justify-content:center;z-index:9999;backdrop-filter:blur(4px)}
.modal-box{background:var(--bg-card);border-radius:var(--radius-2xl);padding:36px 32px;width:100%;max-width:420px;border:1px solid var(--border);position:relative;box-shadow:0 24px 80px rgba(0,0,0,0.5)}
.modal-close{position:absolute;top:12px;right:16px;background:none;border:none;font-size:24px;color:var(--text-muted);cursor:pointer;padding:4px}
.modal-close:hover{color:var(--text-primary)}
.form-input:-webkit-autofill,.form-input:-webkit-autofill:hover,.form-input:-webkit-autofill:focus{transition:background-color 5000s ease-in-out 0s;-webkit-text-fill-color:var(--text-primary)!important;caret-color:var(--text-primary);box-shadow:0 0 0px 1000px var(--bg-input) inset!important}
[data-theme="dark"] a[style*="color:var(--brand)"]{color:var(--link-color)!important}
@media(max-width:768px){
    body{align-items:center;padding:16px}
    .auth-wrap{flex-direction:column;max-width:440px;width:100%;border-radius:var(--radius-2xl);box-shadow:0 24px 80px rgba(0,0,0,0.45);border:1px solid var(--border);background:var(--bg-card);min-height:auto}
    .auth-left{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:28px 20px;width:100%}
    .auth-left>*{width:100%;max-width:400px}
    .auth-left .auth-logo{justify-content:center;width:auto}
    .auth-left .form-group{text-align:left}
    .auth-left .form-input{width:100%!important}
    .auth-left .btn-submit{width:100%!important}
    .auth-left .flex-row{flex-direction:row!important;justify-content:space-between!important}
    .auth-left .password-wrap{width:100%}
    .auth-right{display:none}
    .auth-wrap-single{padding:28px 20px;max-width:440px;width:100%;border-radius:var(--radius-2xl);box-shadow:0 24px 80px rgba(0,0,0,0.45)}
    .auth-wrap-single>*{width:100%;max-width:400px}

}