/**
 * GreenSpace Authentication Styles
 * Modern white and green theme
 */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    position: relative;
    overflow: hidden;
}

.auth-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #2e7d32, #4caf50);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: #2e7d32;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.auth-header p {
    color: #666;
    font-size: 1rem;
    font-weight: 400;
}

.auth-form {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fafafa;
}

.form-group input:focus {
    outline: none;
    border-color: #4caf50;
    background: white;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.1);
}

.form-group input:invalid {
    border-color: #f44336;
}

.btn {
    width: 100%;
    padding: 14px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, #2e7d32, #4caf50);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #1b5e20, #388e3c);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 125, 50, 0.3);
}

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

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.alert-error {
    background: #ffebee;
    color: #c62828;
    border-left: 4px solid #f44336;
}

.alert-success {
    background: #e8f5e8;
    color: #2e7d32;
    border-left: 4px solid #4caf50;
}

.auth-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

.auth-footer p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.auth-footer a {
    color: #4caf50;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
}

.auth-footer a:hover {
    color: #2e7d32;
    text-decoration: underline;
}

/* Responsive Design */
@media (max-width: 480px) {
    .auth-container {
        padding: 10px;
    }
    
    .auth-card {
        padding: 30px 20px;
    }
    
    .auth-header h1 {
        font-size: 2rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

/* Form Validation */
.form-group input.error {
    border-color: #f44336;
    background: #ffebee;
}

.form-group .error-message {
    color: #f44336;
    font-size: 0.8rem;
    margin-top: 4px;
    display: block;
}

/* OTP Input Styling */
#otp {
    text-align: center;
    font-size: 1.2rem;
    letter-spacing: 2px;
    font-weight: 600;
}

/* Password Strength Indicator */
.password-strength {
    margin-top: 8px;
    height: 4px;
    background: #e0e0e0;
    border-radius: 2px;
    overflow: hidden;
}

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

.password-strength.weak .password-strength-bar {
    background: #f44336;
    width: 25%;
}

.password-strength.medium .password-strength-bar {
    background: #ff9800;
    width: 50%;
}

.password-strength.strong .password-strength-bar {
    background: #4caf50;
    width: 100%;
}