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

body {
    font-family: 'Inter', sans-serif;
    background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, #2d2d2d 100%);
    color: #ffffff;
    overflow: hidden;
}

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    position: relative;
    padding: 20px;
}

.background-pattern {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(238, 69, 64, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(238, 69, 64, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.login-card {
    background: rgba(30, 30, 30, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(238, 69, 64, 0.2);
    border-radius: 20px;
    padding: 40px;
    width: 100%;
    max-width: 440px;
    box-shadow: 
        0 20px 40px rgba(0, 0, 0, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 1;
}

.logo-section {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: #ee4540;
    background: linear-gradient(135deg, #ee4540, #ff6b6b);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

.logo-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1;
}

.brand-primary {
    font-size: 18px;
    font-weight: 700;
    color: #ee4540;
}

.brand-secondary {
    font-size: 12px;
    font-weight: 400;
    color: #999;
    letter-spacing: 2px;
}

.system-title {
    font-size: 28px;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 8px;
}

.system-subtitle {
    font-size: 16px;
    color: #888;
    font-weight: 400;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-size: 14px;
    font-weight: 500;
    color: #ccc;
}

.input-group input {
    padding: 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    color: #ffffff;
    font-size: 16px;
    transition: all 0.3s ease;
}

.input-group input:focus {
    outline: none;
    border-color: #ee4540;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(238, 69, 64, 0.1);
}

.input-group input::placeholder {
    color: #666;
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: -8px;
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: #ccc;
}

.checkbox-container input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    position: relative;
    transition: all 0.3s ease;
}

.checkbox-container input[type="checkbox"]:checked + .checkmark {
    background: #ee4540;
    border-color: #ee4540;
}

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

.forgot-password {
    color: #ee4540;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s ease;
}

.forgot-password:hover {
    color: #ff6b6b;
}

.login-btn {
    background: linear-gradient(135deg, #ee4540, #ff6b6b);
    border: none;
    border-radius: 12px;
    padding: 16px;
    color: white;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    margin-top: 8px;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(238, 69, 64, 0.3);
}

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

.btn-text {
    display: inline-block;
    transition: opacity 0.3s ease;
}

.btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.demo-info {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    position: relative;
}

.demo-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #ee4540;
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 1px;
}

.demo-info p {
    font-size: 14px;
    color: #888;
    margin-bottom: 16px;
}

.demo-credentials {
    background: rgba(238, 69, 64, 0.1);
    border: 1px solid rgba(238, 69, 64, 0.2);
    border-radius: 8px;
    padding: 16px;
    font-size: 14px;
    color: #ccc;
    text-align: left;
}

.demo-credentials code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    color: #ee4540;
    font-family: 'Courier New', monospace;
}

@media (max-width: 480px) {
    .login-card {
        padding: 30px 20px;
        margin: 10px;
    }
    
    .system-title {
        font-size: 24px;
    }
    
    .logo-text {
        align-items: center;
    }
}