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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 50%, #f1f5f9 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    padding: 20px;
}

.container {
    position: relative;
    width: 100%;
    max-width: 1200px;
    height: 750px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.5);
    overflow: hidden;
}

.form-container {
    position: absolute;
    top: 0;
    height: 100%;
    transition: all 0.6s ease-in-out;
}

.sign-in {
    left: 0;
    width: 50%;
    z-index: 2;
}

.sign-up {
    left: 0;
    width: 50%;
    opacity: 0;
    z-index: 1;
}

.container.right-panel-active .sign-in {
    transform: translateX(100%);
}

.container.right-panel-active .sign-up {
    transform: translateX(100%);
    opacity: 1;
    z-index: 5;
    animation: show 0.6s;
}

@keyframes show {

    0%,
    49.99% {
        opacity: 0;
        z-index: 1;
    }

    50%,
    100% {
        opacity: 1;
        z-index: 5;
    }
}

.form {
    background: rgba(255, 255, 255, 0.98);
    display: flex;
    flex-direction: column;
    padding: 0 50px;
    height: 100%;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow-y: auto;
}

.form h1 {
    font-weight: 300;
    margin-bottom: 20px;
    color: #4a5568;
    font-size: 2.2rem;
}

.social-container {
    margin: 20px 0;
}

.social-container a {
    border: 1px solid #e2e8f0;
    border-radius: 50%;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    margin: 0 5px;
    height: 40px;
    width: 40px;
    text-decoration: none;
    color: #718096;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.8);
}

.social-container a:hover {
    background: linear-gradient(135deg, #cbd5e0, #a0aec0);
    color: #2d3748;
    transform: translateY(-2px);
    border-color: #a0aec0;
}

.form span {
    font-size: 12px;
    color: #a0aec0;
    margin: 15px 0;
}

.form input {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid #e2e8f0;
    padding: 12px 15px;
    margin: 8px 0;
    width: 100%;
    border-radius: 25px;
    outline: none;
    font-size: 14px;
    transition: all 0.3s ease;
    color: #4a5568;
}

.form input:focus {
    border-color: #a0aec0;
    box-shadow: 0 0 10px rgba(160, 174, 192, 0.2);
    background: white;
}

.form button {
    border-radius: 25px;
    border: 1px solid #a0aec0;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 50%, #e2e8f0 100%);
    color: #4a5568;
    font-size: 12px;
    font-weight: bold;
    padding: 12px 45px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all 0.3s ease;
    cursor: pointer;
    margin-top: 15px;
    box-shadow: 0 2px 10px rgba(160, 174, 192, 0.1);
    min-height: 48px;
}

.form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(160, 174, 192, 0.25);
    background: linear-gradient(135deg, #edf2f7 0%, #e2e8f0 50%, #cbd5e0 100%);
    border-color: #718096;
}

.form button:active {
    transform: scale(0.95);
}

.overlay-container {
    position: absolute;
    top: 0;
    left: 50%;
    width: 50%;
    height: 100%;
    overflow: hidden;
    transition: transform 0.6s ease-in-out;
    z-index: 100;
}

.container.right-panel-active .overlay-container {
    transform: translateX(-100%);
}

.overlay {
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 50%, #e2e8f0 100%);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: 0 0;
    color: #4a5568;
    position: relative;
    left: -100%;
    height: 100%;
    width: 200%;
    transform: translateX(0);
    transition: transform 0.6s ease-in-out;
}

.container.right-panel-active .overlay {
    transform: translateX(50%);
}

.overlay-panel {
    position: absolute;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 0 40px;
    text-align: center;
    top: 0;
    height: 100%;
    width: 50%;
    transform: translateX(0);
    transition: transform 0.6s ease-in-out;
}

.overlay-left {
    transform: translateX(-20%);
}

.container.right-panel-active .overlay-left {
    transform: translateX(0);
}

.overlay-right {
    right: 0;
    transform: translateX(0);
}

.container.right-panel-active .overlay-right {
    transform: translateX(20%);
}

.overlay h1 {
    font-weight: 300;
    margin-bottom: 20px;
    font-size: 2rem;
}

.overlay p {
    font-size: 14px;
    font-weight: 300;
    line-height: 1.6;
    letter-spacing: 0.5px;
    margin: 20px 0 30px;
    opacity: 0.7;
    color: #718096;
}

.overlay button {
    border-radius: 25px;
    border: 2px solid #a0aec0;
    background: transparent;
    color: #4a5568;
    font-size: 12px;
    font-weight: bold;
    padding: 12px 45px;
    letter-spacing: 1px;
    text-transform: uppercase;
    transition: all 0.3s ease;
    cursor: pointer;
    min-height: 48px;
}

.overlay button:hover {
    background: rgba(255, 255, 255, 0.9);
    color: #2d3748;
    transform: translateY(-2px);
    border-color: #718096;
    box-shadow: 0 4px 12px rgba(160, 174, 192, 0.2);
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 70%;
    right: 10%;
    animation-delay: 2s;
}

.shape:nth-child(3) {
    width: 60px;
    height: 60px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.form-group {
    position: relative;
    width: 100%;
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #a0aec0;
    z-index: 1;
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #a0aec0;
    cursor: pointer;
    z-index: 2;
    transition: color 0.3s ease;
    font-size: 14px;
    padding: 5px;
}

.password-toggle:hover {
    color: #718096;
}

.form input.with-icon {
    padding-left: 45px;
}

.form input.with-password-toggle {
    padding-right: 45px;
}

.input-group {
    position: relative;
}

.input-group .input-icon,
.input-group .password-toggle {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    color: #ccc;
    font-size: 1rem;
    z-index: 2;
}

.input-group .input-icon {
    left: 15px;
}

.input-group .password-toggle {
    right: 15px;
    cursor: pointer;
    padding: 8px;
}

.input-group input {
    width: 100%;
    padding: 12px 45px 12px 45px;
    border-radius: 25px;
    border: 1px solid #ccc;
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin: 10px 0;
    font-size: 12px;
    color: #718096;
}

.checkbox-container input[type="checkbox"] {
    margin-right: 8px;
    width: auto;
    min-width: 16px;
    min-height: 16px;
}

.forgot-password {
    color: #a0aec0;
    text-decoration: none;
    font-size: 12px;
    margin-top: 10px;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #718096;
}

.error-message {
    color: #e53e3e;
    font-size: 12px;
    margin-top: 5px;
    text-align: left;
    padding-left: 15px;
}

.input-error {
    border-color: #e53e3e !important;
}

.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    display: none;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 5px solid #ccc;
    border-top-color: #4285f4;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 15px;
}

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

.loader-overlay p {
    font-size: 1rem;
    color: #555;
    font-weight: 500;
}

/* Mobile Toggle Button */
.mobile-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: linear-gradient(135deg, #f7fafc 0%, #edf2f7 50%, #e2e8f0 100%);
    border: 2px solid #a0aec0;
    color: #4a5568;
    padding: 12px 20px;
    border-radius: 25px;
    font-size: 12px;
    font-weight: bold;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(160, 174, 192, 0.3);
    transition: all 0.3s ease;
}

.mobile-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(160, 174, 192, 0.4);
}

/* Enhanced Responsive Design */
@media (max-width: 1024px) {
    .container {
        width: 95%;
        max-width: 900px;
    }

    .form {
        padding: 0 40px;
    }

    .form h1 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        width: 100%;
        height: auto;
        min-height: 600px;
        max-height: 90vh;
        flex-direction: column;
    }

    .form-container {
        position: relative !important;
        width: 100% !important;
        height: auto;
        transform: none !important;
        opacity: 1 !important;
    }

    .sign-in,
    .sign-up {
        position: relative;
        width: 100% !important;
        left: 0 !important;
        transform: none !important;
        opacity: 1;
        z-index: 1;
    }

    .sign-up {
        display: none;
    }

    .sign-up.active {
        display: block;
    }

    .sign-in.hidden {
        display: none;
    }

    .overlay-container {
        display: none;
    }

    .form {
        padding: 30px 20px;
        min-height: auto;
        justify-content: flex-start;
        padding-top: 40px;
        padding-bottom: 40px;
    }

    .form h1 {
        font-size: 1.8rem;
        margin-bottom: 15px;
    }

    .form input {
        padding: 14px 15px;
        font-size: 16px;
        /* Prevents zoom on iOS */
        margin: 6px 0;
    }

    .form input.with-icon {
        padding: 14px 45px 14px 45px;
    }

    .form input.with-password-toggle {
        padding-right: 50px;
    }

    .social-container a {
        height: 44px;
        width: 44px;
        margin: 0 8px;
    }

    .form button {
        padding: 16px 40px;
        font-size: 14px;
        margin-top: 20px;
        width: 100%;
        min-height: 48px;
    }

    .overlay button {
        padding: 16px 40px;
        font-size: 14px;
        width: 100%;
        min-height: 48px;
    }

    .mobile-toggle {
        display: block;
    }

    .checkbox-container {
        margin: 15px 0;
        font-size: 14px;
    }

    .forgot-password {
        font-size: 14px;
        margin-top: 15px;
    }

    .error-message {
        font-size: 13px;
    }

    .password-toggle {
        padding: 10px;
        font-size: 16px;
    }

    /* Floating shapes adjustments for mobile */
    .shape {
        display: none;
    }
}

@media (max-width: 480px) {
    .form {
        padding: 20px 15px;
    }

    .form h1 {
        font-size: 1.6rem;
    }

    .form input {
        padding: 12px 15px;
        font-size: 16px;
    }

    .form input.with-icon {
        padding: 12px 40px 12px 40px;
    }

    .form input.with-password-toggle {
        padding-right: 45px;
    }

    .mobile-toggle {
        bottom: 15px;
        right: 15px;
        padding: 10px 16px;
        font-size: 11px;
    }
}

@media (max-width: 320px) {
    .form {
        padding: 15px 10px;
    }

    .form h1 {
        font-size: 1.4rem;
    }

    .social-container a {
        height: 40px;
        width: 40px;
        margin: 0 5px;
    }
}

/* Landscape orientation on mobile */
@media (max-height: 500px) and (orientation: landscape) {
    .container {
        height: auto;
        max-height: none;
    }

    .form {
        padding: 20px;
        justify-content: flex-start;
    }

    .form h1 {
        font-size: 1.5rem;
        margin-bottom: 10px;
    }

    .social-container {
        margin: 10px 0;
    }

    .form span {
        margin: 10px 0;
    }

    .form input {
        margin: 4px 0;
    }
}

/* Animation classes for smooth transitions */
@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-5px);
    }

    75% {
        transform: translateX(5px);
    }
}

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

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

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Touch-friendly improvements */
@media (hover: none) and (pointer: coarse) {

    .social-container a:hover,
    .form button:hover,
    .overlay button:hover,
    .password-toggle:hover,
    .forgot-password:hover {
        transform: none;
    }

    .social-container a:active,
    .form button:active,
    .overlay button:active {
        transform: scale(0.95);
    }
}