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

        :root {
            --primary: #E91E63;
            --secondary: #9C27B0;
            --accent: #00BCD4;
            --light-pink: #FCE4EC;
            --light-purple: #F3E5F5;
            --light-teal: #E0F7FA;
            --text-dark: #2C3E50;
            --text-light: #7F8C8D;
            --white: #FFFFFF;
            --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
        }

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #FCE4EC 0%, #F3E5F5 50%, #E0F7FA 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
            color: var(--text-dark);
        }

        .auth-container {
            width: 100%;
            max-width: 450px;
            background: white;
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
            overflow: hidden;
            animation: slideUp 0.5s ease-out;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .auth-header {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            padding: 2rem;
            text-align: center;
            color: white;
        }

        .logo {
            width: 70px;
            height: 70px;
            background: white;
            border-radius: 50%;
            margin: 0 auto 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            box-shadow: var(--shadow);
        }

        .auth-header h1 {
            font-size: 1.5rem;
            margin-bottom: 0.5rem;
        }

        .auth-header p {
            font-size: 0.9rem;
            opacity: 0.9;
        }

        .auth-body {
            padding: 2rem;
        }

        .tab-buttons {
            display: flex;
            gap: 0.5rem;
            margin-bottom: 2rem;
            background: var(--light-purple);
            padding: 0.3rem;
            border-radius: 10px;
        }

        .tab-btn {
            flex: 1;
            padding: 0.8rem;
            border: none;
            background: transparent;
            color: var(--text-light);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            border-radius: 8px;
            transition: all 0.3s;
        }

        .tab-btn.active {
            background: white;
            color: var(--primary);
            box-shadow: var(--shadow);
        }

        .form-container {
            display: none;
        }

        .form-container.active {
            display: block;
            animation: fadeIn 0.3s;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        .form-group {
            margin-bottom: 1.5rem;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
        }

        label {
            display: block;
            margin-bottom: 0.5rem;
            color: var(--text-dark);
            font-weight: 500;
            font-size: 0.9rem;
        }

        input, select {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid var(--light-purple);
            border-radius: 10px;
            font-size: 1rem;
            transition: all 0.3s;
            background: var(--light-pink);
        }

        input:focus, select:focus {
            outline: none;
            border-color: var(--primary);
            background: white;
        }

        input::placeholder {
            color: var(--text-light);
        }

        .password-wrapper {
            position: relative;
        }

        .toggle-password {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1.2rem;
            color: var(--text-light);
        }

        .submit-btn {
            width: 100%;
            padding: 1rem;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            border: none;
            border-radius: 10px;
            font-size: 1.1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: var(--shadow);
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }

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

        .submit-btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .loading {
            display: inline-block;
            width: 16px;
            height: 16px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.6s linear infinite;
        }

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

        .message {
            padding: 0.8rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            display: none;
        }

        .message.show {
            display: block;
            animation: slideDown 0.3s;
        }

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

        .message.error {
            background: #ffebee;
            color: #c62828;
            border: 1px solid #ef5350;
        }

        .message.success {
            background: #e8f5e9;
            color: #2e7d32;
            border: 1px solid #66bb6a;
        }

        .forgot-password {
            text-align: right;
            margin-top: 0.5rem;
        }

        .forgot-password a {
            color: var(--primary);
            text-decoration: none;
            font-size: 0.9rem;
            cursor: pointer;
        }

        .forgot-password a:hover {
            text-decoration: underline;
        }

        .divider {
            text-align: center;
            margin: 1.5rem 0;
            color: var(--text-light);
            position: relative;
        }

        .divider::before,
        .divider::after {
            content: '';
            position: absolute;
            top: 50%;
            width: 40%;
            height: 1px;
            background: var(--light-purple);
        }

        .divider::before {
            left: 0;
        }

        .divider::after {
            right: 0;
        }

        /* Date of Birth Custom Styles */
        .dob-container {
            display: flex;
            gap: 0.5rem;
        }

        .dob-select {
            flex: 1;
        }

        .dob-select select {
            width: 100%;
            padding: 0.9rem;
            border: 2px solid var(--light-purple);
            border-radius: 10px;
            font-size: 1rem;
            background: var(--light-pink);
            cursor: pointer;
        }

        .dob-select select:focus {
            outline: none;
            border-color: var(--primary);
            background: white;
        }

        /* Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            animation: fadeIn 0.3s;
        }

        .modal-overlay.active {
            display: flex;
        }

        .modal {
            background: white;
            border-radius: 15px;
            padding: 2rem;
            width: 90%;
            max-width: 400px;
            box-shadow: var(--shadow-lg);
            animation: slideUp 0.3s;
        }

        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }

        .modal-title {
            font-size: 1.3rem;
            color: var(--text-dark);
            font-weight: 600;
        }

        .close-btn {
            background: none;
            border: none;
            font-size: 1.5rem;
            cursor: pointer;
            color: var(--text-light);
            padding: 0;
            width: 30px;
            height: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s;
        }

        .close-btn:hover {
            background: var(--light-pink);
            color: var(--primary);
        }

        .modal-message {
            padding: 1rem;
            border-radius: 8px;
            margin-bottom: 1rem;
            font-size: 0.9rem;
            display: none;
        }

        .modal-message.show {
            display: block;
        }

        .modal-message.success {
            background: #e8f5e9;
            color: #2e7d32;
            border: 1px solid #66bb6a;
        }

        .modal-message.error {
            background: #ffebee;
            color: #c62828;
            border: 1px solid #ef5350;
        }

        @media (max-width: 768px) {
            body {
                padding: 1rem;
            }

            .auth-container {
                max-width: 100%;
            }

            .auth-body {
                padding: 1.5rem;
            }

            .form-row {
                grid-template-columns: 1fr;
            }

            .auth-header h1 {
                font-size: 1.3rem;
            }

            .logo {
                width: 60px;
                height: 60px;
                font-size: 1.8rem;
            }

            .modal {
                padding: 1.5rem;
                margin: 1rem;
            }

            .dob-container {
                flex-direction: column;
                gap: 0.8rem;
            }
        }
        .logo {
            width: 100px;
            height: 100px;
            background: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow);
            overflow: hidden; /* make sure image stays inside the circle */
        }
        
        .logo-img {
            width: 100%;  /* make image fit the container */
            height: 100%;
            object-fit: cover; /* fill container while keeping aspect ratio */
        }