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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #e2e8f0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.6;
}

.container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    max-width: 1200px;
    width: 95%;
    gap: 4rem;
    align-items: center;
    padding: 2rem;
}

.auth-card {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.auth-card:hover {
    border-color: rgba(255, 255, 255, 0.2);
    box-shadow: 0 35px 60px -12px rgba(0, 0, 0, 0.6);
}

.logo-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.logo {
    width: 64px;
    height: 64px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.title {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #10b981 0%, #3b82f6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #94a3b8;
    font-size: 1.1rem;
    font-weight: 400;
}

.google-auth-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #e2e8f0;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.google-auth-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-1px);
}

.google-icon {
    flex-shrink: 0;
}

.divider {
    position: relative;
    text-align: center;
    margin: 2rem 0;
    color: #64748b;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
}

.divider span {
    background: rgba(30, 41, 59, 0.8);
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    color: #cbd5e1;
    font-size: 0.9rem;
}

.form-group input {
    padding: 1rem 1.25rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #e2e8f0;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #10b981;
    background: rgba(15, 23, 42, 0.8);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-group input::placeholder {
    color: #64748b;
}

.password-strength {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 0.5rem;
}

.strength-bar {
    height: 100%;
    width: 0%;
    transition: all 0.3s ease;
    border-radius: 2px;
}

.form-options {
    margin: 0.5rem 0;
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    cursor: pointer;
    font-size: 0.9rem;
    color: #94a3b8;
    line-height: 1.4;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    position: relative;
    flex-shrink: 0;
    transition: all 0.3s ease;
    margin-top: 0.1rem;
}

.checkbox-container input:checked + .checkmark {
    background: #10b981;
    border-color: #10b981;
}

.checkbox-container input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 4px;
    top: 1px;
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.checkbox-container a {
    color: #10b981;
    text-decoration: none;
}

.checkbox-container a:hover {
    text-decoration: underline;
}

.signup-btn {
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    border: none;
    border-radius: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.signup-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.4);
}

.auth-switch {
    text-align: center;
    margin-top: 2rem;
    color: #94a3b8;
}

.auth-switch a {
    color: #10b981;
    text-decoration: none;
    font-weight: 500;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.features-section {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.feature {
    background: rgba(30, 41, 59, 0.6);
    padding: 2rem;
    border-radius: 16px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.feature:hover {
    border-color: rgba(16, 185, 129, 0.3);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.feature h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #e2e8f0;
}

.feature p {
    color: #94a3b8;
    line-height: 1.6;
}

/* Success state */
.auth-card.success {
    border-color: #10b981;
    box-shadow: 0 25px 50px -12px rgba(16, 185, 129, 0.3);
}

/* Responsive Design */
@media (max-width: 968px) {
    .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .features-section {
        order: -1;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }
    
    .auth-card {
        padding: 2rem;
    }
    
    .title {
        font-size: 1.75rem;
    }
}

/* Loading animation */
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.loading {
    animation: pulse 2s infinite;
}