:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #764ba2d1 0%, #667eeada 100%);
    --primary-color-forgot: #4CAF50;
    --secondary-color-forgot: #2196F3;
    --background-color-forgot: #f4f7f6;
    --card-background: #ffffff;
    --text-color: #333;
    --border-color: #ddd;
    --error-color: #e74c3c;
    --success-color: #27ae60;
    --warning-color: #f39c12;
    --info-color: #3498db;
    --border-radius: 10px;
    --box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Montserrat', sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
    width: 100%;
    max-width: 500px;
    overflow: hidden;
    position: relative;
    text-align: center;
}

.header {
    background: var(--primary-gradient);
    color: white;
    padding: 40px 30px;
    position: relative;
}

.header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    margin-bottom: 10px;
}

.header p {
    opacity: 0.9;
    font-size: 1.2rem;
}

.section {
    display: none;
    padding: 40px 30px;
    animation: fadeIn 0.5s ease;
}

.section.active {
    display: block;
}

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

.content {
    padding: 40px;
    text-align: center;
}

.success-message, .message {
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: none;
    font-weight: 500;
    text-align: left;
}

.success-message.active, .message.active {
    display: block;
}

.success-message {
    background: #f0f9f0;
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.message.success {
    background: #e8f5e9;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.message.error {
    background: #fdf2f2;
    color: var(--error-color);
    border-left: 4px solid var(--error-color);
}

.form-group {
    margin-bottom: 25px;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    text-align: left;
    font-weight: 600;
    color: #2e5eed;
}

.form-group label i {
    margin-right: 8px;
}

.form-control {
    width: 100%;
    padding: 15px;
    border: 2px solid #e1e5e9;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background: #fff;
    margin: 0 auto;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control.error {
    border-color: var(--error-color);
    background: #fdf2f2;
}

.form-control.success {
    border-color: var(--success-color);
    background: #f0f9f0;
}

.error-message {
    color: var(--error-color);
    font-size: 14px;
    margin-top: 5px;
    display: none;
    padding: 8px 12px;
    background: #fdf2f2;
    border-radius: 5px;
    border-left: 4px solid var(--error-color);
    text-align: left;
}

.btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 15px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    margin-bottom: 15px;
    text-decoration: none;
    display: inline-block;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-secondary:hover {
    background: var(--secondary-gradient);
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

.btn-sign {
    background: #333;
    color: white;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-sign:hover {
    background: #333333b6;
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

.password-strength {
    margin-top: 10px;
}

.strength-bar {
    height: 6px;
    width: 90%;
    background: #e1e5e9;
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.strength-fill {
    height: 100%;
    transition: width 0.3s ease, background-color 0.3s ease;
    width: 0%;
}

.strength-text {
    font-size: 14px;
    margin-top: 5px;
    font-weight: 600;
}

.strength-weak { background: var(--error-color); }
.strength-medium { background: var(--warning-color); }
.strength-strong { background: var(--success-color); }

.text-weak { color: var(--error-color); }
.text-medium { color: var(--warning-color); }
.text-strong { color: var(--success-color); }

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

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

.section-title {
    font-size: 24px;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
    text-align: center;
}

.section-subtitle {
    color: #666;
    text-align: center;
    margin-bottom: 30px;
}

.features {
    margin: 30px 0;
    text-align: left;
}

.feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background: #f8f9fa;
    border-radius: 8px;
}

.feature i {
    color: #667eea;
    margin-right: 15px;
    font-size: 1.2rem;
    width: 20px;
}

.footer {
    background: #f8f9fa;
    padding: 20px 30px;
    color: #666;
    font-size: 14px;
}

.success-icon {
    text-align: center;
    margin-bottom: 20px;
}

.success-icon i {
    font-size: 60px;
    color: var(--success-color);
    animation: bounceIn 0.6s ease;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); opacity: 1; }
}

.back-link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9em;
}

.back-link a {
    color: var(--primary-color-forgot);
    text-decoration: none;
    font-weight: bold;
}

.back-link a:hover {
    text-decoration: underline;
}

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

    .container {
        border-radius: 15px;
    }

    .header {
        padding: 20px;
    }

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

    .section {
        padding: 30px 20px;
    }
}