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

:root {
    --primary-color: #667eea;
    --primary-dark: #5a67d8;
    --secondary-color: #764ba2;
    --accent-color: #f093fb;
    --dark: #0f0f23;
    --gray-light: #f7fafc;
    --gray-medium: #e2e8f0;
    --gray-dark: #4a5568;
    --success: #48bb78;
    --error: #f56565;
    --warning: #ed8936;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow-x: hidden;
}

/* Animated background elements */
.bg-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: -1;
}

.floating-shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.floating-shape:nth-child(1) {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-shape:nth-child(2) {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.floating-shape:nth-child(3) {
    width: 60px;
    height: 60px;
    top: 80%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    33% { transform: translateY(-20px) rotate(120deg); }
    66% { transform: translateY(10px) rotate(240deg); }
}

/* Main container */
.auth-container {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 0px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    padding: 0;
    width: 90%;
    max-width: 900px;
    min-height: 600px;
    display: flex;
    overflow: hidden;
    position: relative;
}

/* Left side - Forms */
.auth-forms {
    flex: 1;
    padding: 60px 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

/* Right side - Branding */
.auth-branding {
    flex: 1;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.auth-branding::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: moveGrid 20s linear infinite;
}

@keyframes moveGrid {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10px, 10px); }
}

.logo {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    z-index: 1;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    z-index: 1;
    width: 95%;
}

.features-list {
    list-style: none;
    z-index: 1;
}

.features-list li {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1rem;
}

.features-list i {
    margin-right: 0.5rem;
    color: var(--accent-color);
}

/* Form styles */
.form-container {
    display: none;
}

.form-container.active {
    display: block;
    animation: slideIn 0.5s ease;
}

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

.form-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 0.5rem;
}

.form-subtitle {
    color: var(--gray-dark);
    margin-bottom: 2rem;
    font-size: 1rem;
}

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

.form-label {

    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: #FFFFFF;
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 2px solid var(--gray-medium);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-input.error {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(245, 101, 101, 0.1);
}

.input-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-dark);
    font-size: 1.1rem;
}

.error-message {
    color: var(--error);
    font-size: 0.8rem;
    margin-top: 0.5rem;
    display: none;
}

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

.form-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.form-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
}

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

.form-button.loading {
    cursor: not-allowed;
    opacity: 0.8;
}

.form-button .spinner {
    display: none;
    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;
}

.form-button.loading .spinner {
    display: inline-block;
    margin-right: 0.5rem;
}

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

.form-switch {
    text-align: center;
    margin-top: 2rem;
    color: var(--gray-dark);
}

.form-switch button {
    background: none;
    border: none;
    color: #FFFFFF;
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
    font-size: inherit;
}

.form-switch button:hover {
    color: var(--primary-dark);
}

.divider {
    display: flex;
    align-items: center;
    margin: 1.5rem 0;
    color: var(--gray-dark);
    font-size: 0.9rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-medium);
}

.divider span {
    padding: 0 1rem;
}

.social-login {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.social-btn {
    flex: 1;
    padding: 0.8rem;
    border: 2px solid var(--gray-medium);
    border-radius: 10px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 500;
}

.social-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-1px);
}

.social-btn.google {
    color: #db4437;
}

.social-btn.github {
    color: #333;
}

.password-toggle {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: var(--gray-dark);
    font-size: 1.1rem;
}

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

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

.forgot-password a {
    color: #bcbdc1;
    text-decoration: none;
    font-size: 0.9rem;
}

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

.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    color: white;
    font-weight: 500;
    z-index: 1000;
    transform: translateX(400px);
    transition: transform 0.3s ease;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: var(--success);
}

.notification.error {
    background: var(--error);
}

.notification.warning {
    background: var(--warning);
}

/* Responsive design */
@media (max-width: 768px) {
    .auth-container {
        flex-direction: column;
        width: 95%;
        min-height: auto;
    }

    .auth-branding {
        order: -1;
        min-height: 200px;
        padding: 2rem;
    }

    .auth-forms {
        padding: 2rem;
    }

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

    .logo {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1rem;
    }

    .social-login {
        flex-direction: column;
    }
}

/* Dashboard preview styles */
.dashboard {
    display: none;
    min-height: 100vh;
    background: var(--gray-light);
}

.dashboard.active {
    display: block;
}

.dashboard-header {
    background: white;
    padding: 1rem 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dashboard-content {
    padding: 2rem;
}

.welcome-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: center;
    max-width: 600px;
    margin: 2rem auto;
}

.logout-btn {
    padding: 0.5rem 1rem;
    background: var(--error);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
}

.logout-btn:hover {
    background: #e53e3e;
}

/* Background animation */
.bg-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.floating-shape {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

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

.floating-shape:nth-child(2) {
    width: 60px;
    height: 60px;
    top: 70%;
    right: 20%;
    animation-delay: 2s;
}

.floating-shape:nth-child(3) {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Main container */
.auth-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 100%;
    margin: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 0;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    overflow: hidden;
    position: relative;
    z-index: 1;
}

/* Form side */
.auth-forms {
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
}

.form-container {
    display: none;
}

.form-container.active {
    display: block;
}

.form-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    text-align: center;
}

.form-subtitle {
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

/* Carousel Styles */
.carousel-container {
    position: relative;
    margin: 2rem 0;
}

.carousel-nav {
    position: absolute;
    top: 50%;
    display: none;
    transform: translateY(-50%);
    width: 100%;
    justify-content: space-between;
    z-index: 10;
    pointer-events: none;
}

.carousel-track {
    overflow: hidden;
    border-radius: 1rem;
    position: relative;
}

.carousel-wrapper {
    display: flex;
    transition: transform 0.5s ease;
    width: 400%;
}

.plan-card {
    flex: 0 0 25.2%;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 2rem .2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(10px);
    margin: 0 !important;
}

.plan-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.plan-card.popular {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.15);
    transform: scale(1.05);
}

.plan-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.plan-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0, 212, 255, 0.3);
}

.plan-header {
    margin-bottom: 1.5rem;
}

.plan-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
}

.plan-price {
    color: white;
}

.plan-price .price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #00d4ff;
}

.plan-price .period {
    font-size: 1rem;
    opacity: 0.8;
}

.plan-features {

    padding-left: 1em;
}

.plan-features ul {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    text-align: left;
}

.plan-features li {
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    font-size: 0.95rem;
}

.plan-features li i {
    color: #00d4ff;
    margin-right: 0.5rem;
    font-size: 1rem;
}

.plan-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    color: white;
    border: none;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
    font-size: 1rem;
}

.plan-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.4);
}

/* Carousel Indicators */
.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.carousel-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-dot.active {
    background: #00d4ff;
    transform: scale(1.2);
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.5);
}

/* Carousel Counter */
.carousel-counter {
    text-align: center;
    margin-top: 1rem;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* Signup steps */
.signup-step {
    display: none;
}

.signup-step.active {
    display: block;
}

/* Selected plan info */
.selected-plan-info {
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 0.5rem;
    padding: 1rem;
    margin-bottom: 2rem;
}

.plan-summary {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: white;
}

.plan-label {
    opacity: 0.8;
}

.selected-plan-name {
    font-weight: 600;
    color: #00d4ff;
}

.selected-plan-price {
    font-weight: 700;
    color: #00d4ff;
}

/* Form buttons */
.form-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-button.secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.form-button.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* Order summary */
.order-summary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.order-summary h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    color: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-item.total {
    font-weight: 700;
    font-size: 1.1rem;
    margin-top: 0.5rem;
    padding-top: 1rem;
    border-top: 2px solid rgba(0, 212, 255, 0.3);
}

.summary-item.total .summary-value {
    color: #00d4ff;
}

/* Payment methods */
.payment-methods {
    margin-bottom: 2rem;
}

.payment-methods h4 {
    color: white;
    margin-bottom: 1rem;
}

.payment-options {
    display: flex;
    gap: 1rem;
}

.payment-option {
    flex: 1;
    cursor: pointer;
}

.payment-option input[type="radio"] {
    display: none;
}

.payment-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    transition: all 0.3s ease;
}

.payment-option input[type="radio"]:checked + .payment-label {
    border-color: #00d4ff;
    background: rgba(0, 212, 255, 0.1);
    color: #00d4ff;
}

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

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-buttons {
        flex-direction: column;
    }
    
    .plans-container {
        grid-template-columns: 1fr;
    }
    
    .payment-options {
        flex-direction: column;
    }
}