:root {
            --primary-color: #1e3a8a;
            --primary-light: #3b82f6;
            --secondary-color: #64748b;
            --success-color: #059669;
            --warning-color: #d97706;
            --error-color: #dc2626;
            --gray-50: #f8fafc;
            --gray-100: #f1f5f9;
            --gray-200: #e2e8f0;
            --gray-300: #cbd5e1;
            --gray-400: #94a3b8;
            --gray-600: #475569;
            --gray-700: #334155;
            --gray-800: #1e293b;
            --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
            --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
            --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
        }

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

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
            background: linear-gradient(135deg, var(--gray-50) 0%, var(--gray-100) 100%);
            color: var(--gray-800);
            line-height: 1.6;
            min-height: 100vh;
            padding: 20px;
        }

        .container {
            max-width: 800px;
            margin: 0 auto;
            padding-top: 40px;
        }

        .header {
            text-align: center;
            margin-bottom: 40px;
            background-color: #fcb900;
            padding: 20px 32px;
            border-radius: 16px;
            border: 1px solid #fbbf24;
            box-shadow: var(--shadow-md);
        }

        

        .title {
            font-size: 28px;
            font-weight: 700;
            color: var(--gray-800);
            margin-bottom: 8px;
            letter-spacing: -0.025em;
        }

        .subtitle {
            color: var(--gray-600);
            font-size: 16px;
            font-weight: 400;
        }

        .card {
            background: white;
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--gray-200);
        }

        .form-group {
            margin-bottom: 24px;
        }

        .label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            color: var(--gray-700);
            margin-bottom: 6px;
        }

        .required {
            color: var(--error-color);
        }

        .input-container {
            position: relative;
        }

        .input {
            width: 100%;
            padding: 12px 16px;
            border: 2px solid var(--gray-200);
            border-radius: 8px;
            font-size: 16px;
            background: white;
            transition: all 0.2s ease;
            font-family: inherit;
        }

        .input:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgb(30 58 138 / 0.1);
        }

        .input:invalid {
            border-color: var(--error-color);
        }

        .input:invalid:focus {
            box-shadow: 0 0 0 3px rgb(220 38 38 / 0.1);
        }

        .input-error {
            border-color: var(--error-color) !important;
        }

        .error-message {
            color: var(--error-color);
            font-size: 14px;
            margin-top: 6px;
            display: none;
        }

        .password-strength {
            margin-top: 8px;
            display: none;
        }

        .strength-bar {
            height: 4px;
            background: var(--gray-200);
            border-radius: 2px;
            overflow: hidden;
            margin-bottom: 6px;
        }

        .strength-fill {
            height: 100%;
            background: var(--error-color);
            width: 0%;
            transition: all 0.3s ease;
            border-radius: 2px;
        }

        .strength-text {
            font-size: 12px;
            color: var(--gray-600);
        }

        .permissions-section {
            background: var(--gray-50);
            border: 1px solid var(--gray-200);
            border-radius: 12px;
            padding: 24px;
            margin: 32px 0;
        }

        .permissions-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
        }

        .permissions-icon {
            width: 20px;
            height: 20px;
            margin-right: 8px;
            color: var(--primary-color);
        }

        .checkbox-group {
            display: grid;
            gap: 16px;
        }

        .checkbox-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            cursor: pointer;
            padding: 12px;
            border-radius: 8px;
            transition: background 0.2s ease;
        }

        .checkbox-item:hover {
            background: white;
        }

        .checkbox {
            width: 18px;
            height: 18px;
            border: 2px solid var(--gray-300);
            border-radius: 4px;
            position: relative;
            cursor: pointer;
            transition: all 0.2s ease;
            flex-shrink: 0;
            margin-top: 2px;
            background: white;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .checkbox input {
            opacity: 0;
            position: absolute;
            width: 100%;
            height: 100%;
            cursor: pointer;
            margin: 0;
            z-index: 1;
        }

        .checkbox input:checked ~ .checkmark {
            background: var(--primary-color);
            border-color: var(--primary-color);
        }

        .checkbox input:checked ~ .checkmark::after {
            display: block;
        }

        .checkmark {
            width: 100%;
            height: 100%;
            border-radius: 2px;
            transition: all 0.2s ease;
            position: absolute;
            top: 0;
            left: 0;
            pointer-events: none;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .checkmark::after {
            content: '';
            position: absolute;
            display: none;
            width: 4px;
            height: 8px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
            top: 1px;
            left: 1px;
        }

        .permission-info {
            flex: 1;
        }

        .permission-label {
            font-weight: 600;
            color: var(--gray-800);
            margin-bottom: 4px;
        }

        .permission-description {
            font-size: 14px;
            color: var(--gray-600);
            line-height: 1.4;
        }

        .submit-button {
            width: 100%;
            padding: 16px 24px;
            background-color: #fcb900;
            color: black;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 8px;
        }

        .submit-button:hover {
            background: var(--primary-light);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
        }

        .submit-button:active {
            transform: translateY(0);
        }

        .submit-button:disabled {
            background: var(--gray-400);
            cursor: not-allowed;
            transform: none;
        }

        .loading-spinner {
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-top: 2px solid white;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            display: none;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .success-message {
            background: #f0fdf4;
            border: 1px solid #bbf7d0;
            color: var(--success-color);
            padding: 12px 16px;
            border-radius: 8px;
            margin-bottom: 24px;
            display: none;
            font-weight: 500;
        }

        @media (max-width: 640px) {
            .container {
                padding: 20px 16px;
            }
            
            .card {
                padding: 24px 20px;
            }
            
            .title {
                font-size: 24px;
            }
        }

        .fade-in {
            animation: fadeIn 0.5s ease-out;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }