/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    position: relative;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 100%;
    max-width: 400px;
    padding: 20px;
    position: relative;
    z-index: 2;
}

/* Login Card */
.login-card {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Login Header */
.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 24px;
}

.login-header h1 {
    font-size: 28px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 8px;
}

.login-header p {
    color: #666;
    font-size: 16px;
}

/* Browser Invalid Styles */
.browser-invalid .logo {
    background: linear-gradient(135deg, #dc3545, #c82333);
}

.browser-info {
    text-align: left;
    margin-top: 20px;
}

.browser-info p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

.browser-info ul {
    list-style: none;
    margin-bottom: 20px;
}

.browser-info li {
    display: flex;
    align-items: center;
    padding: 8px 0;
    color: #333;
    font-size: 14px;
}

.browser-info li i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
    color: #667eea;
}

.browser-version {
    background: #f8f9fa;
    padding: 10px;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    font-size: 13px;
    color: #666;
}

/* Form Styles */
.login-form {
    margin-bottom: 20px;
}

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

.form-group label {
    display: flex;
    align-items: center;
    font-weight: 500;
    color: #1a1a1a;
    margin-bottom: 8px;
    font-size: 14px;
}

.form-group label i {
    margin-right: 8px;
    color: #667eea;
    width: 16px;
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    background: white;
}

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

.form-group input::placeholder {
    color: #999;
}

/* Password Input */
.password-input {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #999;
    cursor: pointer;
    padding: 4px;
    font-size: 16px;
    transition: color 0.3s ease;
}

.password-toggle:hover {
    color: #667eea;
}

/* Form Options */
.form-options {
    margin-bottom: 25px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 14px;
    color: #666;
    user-select: none;
}

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

.checkmark {
    height: 18px;
    width: 18px;
    background-color: #f8f9fa;
    border: 2px solid #e1e5e9;
    border-radius: 4px;
    margin-right: 10px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container:hover input ~ .checkmark {
    border-color: #667eea;
}

.checkbox-container input:checked ~ .checkmark {
    background-color: #667eea;
    border-color: #667eea;
}

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

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

.checkbox-container .checkmark:after {
    left: 5px;
    top: 2px;
    width: 4px;
    height: 8px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Login Button */
.login-btn {
    width: 100%;
    padding: 14px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

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

.login-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Login Footer */
.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer p {
    color: #666;
    font-size: 14px;
}

.login-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
}

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

/* Background Decoration */
.background-decoration {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.circle-1 {
    width: 200px;
    height: 200px;
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.circle-2 {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 10%;
    animation-delay: 2s;
}

.circle-3 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    padding: 20px 25px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
    color: #1a1a1a;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background-color: #f8f9fa;
    color: #667eea;
}

.modal-body {
    padding: 20px 25px;
}

.modal-body p {
    margin: 0;
    color: #666;
    line-height: 1.5;
}

.modal-footer {
    padding: 0 25px 20px;
    text-align: right;
}

.btn-secondary {
    background: #6c757d;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
}

.btn-secondary:hover {
    background: #5a6268;
}

/* Responsive Design */
@media (max-width: 480px) {
    .container {
        padding: 15px;
    }
    
    .login-card {
        padding: 30px 25px;
    }
    
    .login-header h1 {
        font-size: 24px;
    }
    
    .form-group input {
        padding: 10px 14px;
    }
    
    .login-btn {
        padding: 12px 18px;
    }
}

/* Loading State */
.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

/* Error States */
.form-group.error input {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form-group.error label {
    color: #dc3545;
}

.error-message {
    color: #dc3545;
    font-size: 12px;
    margin-top: 5px;
    display: block;
}