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

body {
    font-family: 'Open Sans', sans-serif;
    background: linear-gradient(135deg, #4f695B 0%, #7f9e8e 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 450px;
}

.login-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-section {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    height: 100px;
    width: auto;
    margin-bottom: 10px;
}

.logo-section h1 {
    color: #4f695B;
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}

.logo-section p {
    color: #7f9e8e;
    font-size: 16px;
}

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

.form-group label {
    display: block;
    color: #4f695B;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
}

.form-group input:focus {
    outline: none;
    border-color: #4f695B;
    box-shadow: 0 0 0 3px rgba(79, 105, 91, 0.1);
}

.form-options {
    margin-bottom: 25px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #7f9e8e;
}

.checkbox-container input {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #e0e0e0;
    border-radius: 4px;
    margin-right: 10px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container input:checked + .checkmark {
    background-color: #4f695B;
    border-color: #4f695B;
}

.checkbox-container input:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    color: white;
    font-size: 12px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.login-btn {
    width: 100%;
    background: linear-gradient(135deg, #4f695B 0%, #7f9e8e 100%);
    color: white;
    border: none;
    padding: 14px;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 20px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(79, 105, 91, 0.3);
}

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

.divider {
  display: flex;
  align-items: center;
  margin: 20px 0;
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #e0e0e0;
}

.divider::before {
  margin-right: 15px;
}

.divider::after {
  margin-left: 15px;
}

.divider span {
  white-space: nowrap;
  color: #7f9e8e;
  font-size: 14px;
}

.register-section {
    text-align: center;
    margin-bottom: 20px;
}

.register-section p {
    color: #7f9e8e;
    margin-bottom: 10px;
}

.register-link {
    color: #4f695B;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

.register-link:hover {
    color: #7f9e8e;
}

.back-home {
    text-align: center;
}

.back-home a {
    color: #7f9e8e;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.back-home a:hover {
    color: #4f695B;
}

.loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading.hidden {
    display: none;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.message {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    animation: slideIn 0.3s ease-out;
}

.message.hidden {
    display: none;
}

.message-content {
    background: white;
    padding: 15px 20px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    display: flex;
    align-items: center;
    gap: 15px;
    max-width: 300px;
}

.message.success .message-content {
    border-left: 4px solid #4CAF50;
}

.message.error .message-content {
    border-left: 4px solid #f44336;
}

#close-message {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #999;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
    }
    
    .logo {
        height: 60px;
    }
    
    .logo-section h1 {
        font-size: 24px;
    }
}