*,
        *::before,
        *::after {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --bg-base: #191a17;
            --bg-surface: #1a1f24;
            --bg-raised: #212830;
            --bg-hover: #272e37;
            --bg-input: #161b20;

            --border: #2a3140;
            --border-hover: #3a4455;
            --border-focus: #4a7fc1;

            --text-primary: #dce3ec;
            --text-secondary: #7f8ea3;
            --text-muted: #4e5e72;

            --accent: #4a7fc1;
            --accent-dim: rgba(74, 127, 193, 0.12);
            --accent-border: rgba(74, 127, 193, 0.35);

            --danger-text: #d46060;
            --danger-bg: rgba(138, 48, 48, 0.12);
            --danger-border: rgba(138, 48, 48, 0.35);

            --success-text: #6ec997;
            --success-bg: rgba(58, 125, 90, 0.12);
            --success-border: rgba(58, 125, 90, 0.35);

            --radius-sm: 4px;
            --radius-md: 6px;
            --radius-lg: 8px;
            --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
        }


        .login-container {
            width: 100%;
            max-width: 380px;
        }

        .login-card {
            border-radius: var(--radius-lg);
            padding: 2rem 2rem 1.5rem;
        }

        .login-header {
            margin-bottom: 1.75rem;
            padding-bottom: 1.25rem;
            border-bottom: 1px solid var(--border);
        }

        .login-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 2px;
            letter-spacing: 0.01em;
        }

        .login-subtitle {
            color: var(--text-secondary);
            font-size: 2.5rem;
            font-weight: 600;
        }

        .form-group {
            margin-bottom: 1rem;
        }

        .form-label {
            display: block;
            margin-bottom: 4px;
            font-size: 0.72rem;
            font-weight: 500;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .form-input {
            width: 100%;
            height: 34px;
            padding: 0 0.875rem;
            padding-left: 1.7rem;
            background: var(--bg-input);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            color: var(--text-primary);
            font-size: 0.85rem;
            font-family: var(--font);
            transition: border-color 0.15s;
        }

        .form-input:focus {
            outline: none;
            border-color: var(--border-focus);
        }

        .form-input::placeholder {
            color: var(--text-muted);
        }

        .password-wrapper {
            position: relative;
        }

        .password-wrapper .form-input {
            padding-right: 2.5rem;
        }

        .password-toggle {
            position: absolute;
            right: 0.75rem;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-muted);
            cursor: pointer;
            font-size: 0.85rem;
            line-height: 1;
            padding: 0;
            transition: color 0.15s;
        }

        .password-toggle:hover {
            color: var(--text-secondary);
        }

        .btn-submit {
            width: 100%;
            height: 34px;
            margin-top: 0.5rem;
            background: var(--accent-dim);
            border: 1px solid var(--accent-border);
            border-radius: var(--radius-md);
            color: var(--accent);
            font-size: 0.82rem;
            font-weight: 500;
            font-family: var(--font);
            cursor: pointer;
            transition: background 0.15s, border-color 0.15s, color 0.15s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .btn-submit:hover {
            background: rgba(74, 127, 193, 0.2);
            border-color: var(--accent);
            color: #6a9fd1;
        }

        .btn-submit:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .alert {
            padding: 0.6rem 0.875rem;
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            font-size: 0.78rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .alert-danger {
            background: var(--danger-bg);
            border: 1px solid var(--danger-border);
            color: var(--danger-text);
        }

        .alert-success {
            background: var(--success-bg);
            border: 1px solid var(--success-border);
            color: var(--success-text);
        }

        .login-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .login-footer p {
            margin: 0 0.5rem;
            color: fff;
            font-size: 0.72rem;
        }

        .version {
            font-size: 0.7rem;
            color: var(--text-muted);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 2px 7px;
        }

        .spinner {
            display: inline-block;
            width: 12px;
            height: 12px;
            border: 1.5px solid var(--accent-border);
            border-top-color: var(--accent);
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }
        footer {
            background-color: #cccccc09;
            width: 100%;
            position: absolute;
            bottom: 0;
            padding: 1rem;
            display: flex;
            justify-content: end !important;
        }

        @keyframes spin {
            to {
                transform: rotate(360deg);
            }
        }

        @media (max-width: 480px) {
            .login-card {
                padding: 1.5rem;
            }
        }