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

        body {
            font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
            background-color: #ffffff;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .header {
            padding: 16px 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            width: 30px;
            height: 30px;
        }

        .signup-link {
            color: #000;
            text-decoration: none;
            font-size: 14px;
        }

        .signup-link a {
            color: #000;
            text-decoration: underline;
            margin-left: 5px;
        }

        .main-container {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px 20px;
        }

        .login-box {
            width: 100%;
            max-width: 420px;
        }

        .login-box h1 {
            font-size: 38px !important;
            font-weight: 700 !important;
            text-align: center;
            margin-bottom: 32px;
            color: #000 !important;
            line-height: 1.2;
            font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji" !important;
        }

        .input-container {
            margin-bottom: 16px;
        }

        input[type="email"],
        input[type="password"] {
            width: 100%;
            padding: 14px 16px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: border-color 0.2s;
            background-color: #f3f4f6;
        }

        input[type="email"]:focus,
        input[type="password"]:focus {
            border-color: #9ca3af;
        }

        input[type="email"]:disabled {
            color: #6b7280;
        }

        input:required:invalid {
            box-shadow: none;
        }

        .input-error {
            border-color: #ef4444 !important;
            background-color: #fef2f2 !important;
        }

        .continue-btn {
            width: 100%;
            padding: 14px;
            background-color: #ffdd00;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.2s;
            color: #000;
            position: relative;
            overflow: hidden;
        }

        .continue-btn:hover:not(:disabled) {
            background-color: #f0ce00;
        }

        .continue-btn:disabled {
            cursor: not-allowed;
            opacity: 0.8;
        }

        .spinner {
            display: none;
            width: 20px;
            height: 20px;
            border: 3px solid #000;
            border-top-color: transparent;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
            margin: 0 auto;
        }

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

        .btn-text {
            display: inline-block;
        }

        .forgot-password {
            text-align: center;
            margin-top: 16px;
            margin-bottom: 24px;
            display: none;
        }

        .forgot-password a {
            color: #000;
            text-decoration: underline;
            font-size: 14px;
        }

        .divider {
            text-align: center;
            margin: 24px 0;
            color: #6b7280;
            font-size: 14px;
        }

        .social-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .social-btn {
            width: 100%;
            padding: 12px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            background-color: #fff;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background-color 0.2s;
            color: #000;
        }

        .social-btn:hover {
            background-color: #f9fafb;
        }

        .social-btn svg {
            margin-right: 12px;
        }

        .password-container {
            display: none;
            animation: fadeIn 0.4s ease-in;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .notification {
            position: fixed;
            top: 20px;
            right: 20px;
            background-color: #fff;
            border-left: 4px solid #ef4444;
            border-radius: 8px;
            padding: 16px 20px;
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
            display: none;
            animation: slideIn 0.4s ease-out;
            z-index: 1000;
            max-width: 380px;
            min-width: 300px;
        }

        .notification.success {
            border-left-color: #10b981;
        }

        .notification.info {
            border-left-color: #3b82f6;
        }

        @keyframes slideIn {
            from {
                transform: translateX(400px);
                opacity: 0;
            }
            to {
                transform: translateX(0);
                opacity: 1;
            }
        }

        .notification.show {
            display: block;
        }

        .notification-title {
            font-size: 15px;
            font-weight: 600;
            color: #111827;
            margin-bottom: 4px;
        }

        .notification-content {
            font-size: 14px;
            color: #6b7280;
        }

        .hidden {
            display: none !important;
        }

        .error-input {
            border-color: #ef4444 !important;
            background-color: #fee2e2 !important;
            animation: shake 0.3s;
        }

        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-10px); }
            75% { transform: translateX(10px); }
        }

        input[type="text"] {
            width: 100%;
            padding: 14px 16px;
            border: 1px solid #d1d5db;
            border-radius: 8px;
            font-size: 16px;
            outline: none;
            transition: all 0.2s;
            background-color: #f3f4f6;
        }

        input[type="text"]:focus {
            border-color: #9ca3af;
        }

        input[type="text"]:disabled {
            cursor: not-allowed;
            opacity: 0.6;
        }