/* Variables */
:root {
    --primary-color: #4361ee;
    --secondary-color: #3f37c9;
    --accent-color: #4895ef;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #4cc9f0;
    --warning-color: #f72585;
    --info-color: #7209b7;
    --error-color: #e53e3e;
    --border-radius: 12px;
    --box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    min-height: 100vh;
    padding: 0;
    margin: 0;
}

/* Container */
.container {
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Login Card */
.login-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    padding: 30px;
    text-align: center;
}

/* Logo */
.logo {
    margin-bottom: 25px;
}

.logo i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.logo h1 {
    color: var(--dark-color);
    font-size: 1.8rem;
    font-weight: 600;
}

/* Form */
.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    text-align: left;
}

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

.input-wrapper {
    position: relative;
}

.input-wrapper i:first-child {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #718096;
}

.input-wrapper input {
    width: 100%;
    padding: 14px 14px 14px 45px;
    border: 1px solid #e2e8f0;
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.input-wrapper input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.toggle-password {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    cursor: pointer;
    color: #718096;
}

/* Remember/Forgot */
.remember-forgot {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    position: relative;
    padding-left: 25px;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: #e2e8f0;
    border-radius: 4px;
    transition: var(--transition);
}

.checkbox-container:hover input ~ .checkmark {
    background-color: #cbd5e0;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--accent-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.forgot-password {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* Buttons */
.login-button, .biometric-button {
    padding: 14px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.login-button {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 6px rgba(26, 58, 109, 0.2);
}

.login-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

.biometric-button {
    background: var(--light-color);
    color: var(--dark-color);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.biometric-button:hover {
    background: #e2e8f0;
}

/* Divider */
.divider {
    display: flex;
    align-items: center;
    text-align: center;
    color: #718096;
    font-size: 0.9rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid #e2e8f0;
}

.divider::before {
    margin-right: 10px;
}

.divider::after {
    margin-left: 10px;
}

/* Signup Link */
.signup-link {
    text-align: center;
    padding: 20px;
    color: #718096;
    font-size: 0.9rem;
}

.signup-link a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* Security Info */
.security-info {
    display: flex;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 15px;
}

.security-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    color: white;
    font-size: 0.8rem;
    gap: 5px;
}

.security-item i {
    font-size: 1.2rem;
}

/* Responsive Design */
@media (max-width: 480px) {
    .login-card {
        padding: 20px;
    }
    
    .logo h1 {
        font-size: 1.5rem;
    }
    
    .security-info {
        flex-direction: column;
        gap: 15px;
    }
    
    .remember-forgot {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
}

/* Error Handling */
.input-error {
    border-color: var(--error-color) !important;
}

.error-message {
    color: var(--error-color);
    font-size: 0.8rem;
    margin-top: 5px;
    text-align: left;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: var(--border-radius);
    border: none;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: #6c757d;
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #ced4da;
}

/* Animations */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.shake {
    animation: shake 0.5s ease-in-out;
}