:root {
    --primary-color: #FFD700; 
    --secondary-color: #FFFFFF;
    --text-color: #333333;
    --background-color: #FFFFFF;
    --card-color: #F8F9FA;
    --border-color: #E0E0E0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --success-color: #28A745;
    --danger-color: #DC3545;
    --warning-color: #FFC107;
    --info-color: #17A2B8;
    --google-color: #DB4437;
}

.dark-mode {
    --primary-color: #555555;
    --secondary-color: #000000;
    --text-color: #E0E0E0;
    --background-color: #121212;
    --card-color: #1E1E1E;
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background-color 0.3s, color 0.3s;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 1rem;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
}

.login-container {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.login-card {
    background-color: var(--card-color);
    border-radius: 10px;
    box-shadow: 0 5px 15px var(--shadow-color);
    overflow: hidden;
    padding: 2rem;
    width: 100%;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header .logo-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.login-header p {
    color: #666;
}

.dark-mode .login-header p {
    color: #AAAAAA;
}

#login-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-size: 1rem;
    background-color: var(--background-color);
    color: var(--text-color);
}

.toggle-password {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    font-size: 1rem;
}

.dark-mode .toggle-password {
    color: #AAAAAA;
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: -0.5rem;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
}

#forgot-password {
    font-size: 0.9rem;
    color: var(--primary-color);
}

#forgot-password:hover {
    text-decoration: underline;
}

.btn {
    padding: 0.75rem;
    border-radius: 5px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--text-color);
}

.btn-primary:hover {
    background-color: #E6C200;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.btn-google {
    background-color: var(--google-color);
    color: white;
}

.btn-google:hover {
    background-color: #C23321;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}

.login-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1rem 0;
    color: #666;
}

.dark-mode .login-divider {
    color: #AAAAAA;
}

.login-divider::before,
.login-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background-color: var(--border-color);
}

.register-link {
    text-align: center;
    margin-top: 1rem;
    color: #666;
}

.dark-mode .register-link {
    color: #AAAAAA;
}

.register-link a {
    color: var(--primary-color);
    font-weight: 500;
}

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

.login-footer {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
}

.dark-mode .login-footer {
    color: #AAAAAA;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-color);
}

.footer-links a:hover {
    text-decoration: underline;
}

.dark-mode-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 2px 5px var(--shadow-color);
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
}

.dark-mode .dark-mode-toggle {
    background-color: var(--primary-color);
    color: var(--text-color);
}

@media (max-width: 480px) {
    .login-card {
        padding: 1.5rem;
    }
    
    .login-header h1 {
        font-size: 1.75rem;
    }
    
    .form-options {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 0.5rem;
    }
}