:root {
    --primary-color: #e74c3c;
    --secondary-color: #f39c12;
    --accent-color: #c0392b;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
    --text-color: #333333;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    color: var(--text-color);
}

.login-container {
    display: flex;
    width: 100%;
    max-width: 1000px;
    background-color: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.login-left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.image-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.login-right {
    flex: 1;
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.logo {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--dark-color);
    text-align: center;
}

h2 {
    font-size: 24px;
    margin-bottom: 30px;
    text-align: center;
    color: var(--dark-color);
    font-weight: 600;
}

.login-form {
    width: 100%;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--dark-color);
}

input {
    width: 100%;
    padding: 15px;
    border: 1px solid #e1e5eb;
    border-radius: var(--border-radius);
    font-size: 16px;
    transition: var(--transition);
    background-color: #f8f9fa;
}

input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(231, 76, 60, 0.1);
    background-color: white;
}

.password-toggle {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
    width: auto;
    padding: 0;
    font-size: 14px;
}

.toggle-password:hover {
    color: var(--primary-color);
    background: none;
    transform: translateY(-50%);
    box-shadow: none;
}

.btn-login {
    width: 100%;
    padding: 15px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 25px;
    position: relative;
    overflow: hidden;
}

.btn-login:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.3);
    background: linear-gradient(to right, var(--accent-color), var(--primary-color));
}

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

.btn-login:disabled {
    background: #cccccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.signup-link {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: #6c757d;
}

.signup-link a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.signup-link a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.error {
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 20px;
    padding: 12px;
    background: #ffebee;
    border: 1px solid #ffcdd2;
    border-radius: 8px;
    font-weight: 500;
}

.success {
    color: #28a745;
    text-align: center;
    margin-bottom: 20px;
    padding: 12px;
    background: #d4edda;
    border: 1px solid #c3e6cb;
    border-radius: 8px;
}

.password-match {
    border-color: #28a745 !important;
}

.password-error {
    border-color: #dc3545 !important;
}

.error-message {
    color: #dc3545;
    font-size: 12px;
    margin-top: 5px;
    display: none;
}

.password-strength {
    font-size: 12px;
    margin-top: 5px;
}

.weak {
    color: #dc3545;
}

.medium {
    color: #f39c12;
}

.strong {
    color: #28a745;
}

@media (max-width: 768px) {
    .login-container {
        flex-direction: column;
    }

    .login-left,
    .login-right {
        padding: 40px 30px;
    }

    .login-left {
        min-height: 250px;
    }
}