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

body {
    font-family: 'Montserrat', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a5f4a 0%, #2c8c6a 50%, #3ba87f 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    overflow: hidden;
    max-width: 900px;
    width: 90%;
    display: flex;
}

.login-left {
    flex: 1;
    background: linear-gradient(135deg, #1a5f4a 0%, #2c8c6a 100%);
    color: white;
    padding: 60px 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.login-left .logo {
    height: 42px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    margin-bottom: 24px;
    filter: drop-shadow(0 0 0 #fff) drop-shadow(0 0 2px #1a5f4a);
}

.login-left p { font-size: 1.1rem; line-height: 1.6; opacity: 0.9; }
.login-left .tagline { margin-top: 30px; font-style: italic; font-size: 1rem; opacity: 0.8; }

.login-right { flex: 1; padding: 60px 40px; }
.login-right h2 { color: #1a5f4a; margin-bottom: 10px; font-size: 1.8rem; }
.login-right .subtitle { color: #666; margin-bottom: 40px; }

.form-group { margin-bottom: 25px; }
.form-group label { display: block; color: #333; margin-bottom: 8px; font-weight: 500; }
.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s;
}
.form-group input:focus {
    outline: none;
    border-color: #2c8c6a;
    box-shadow: 0 0 0 3px rgba(44, 140, 106, 0.1);
}

.btn-login {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #1a5f4a 0%, #2c8c6a 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}
.btn-login:hover { transform: translateY(-2px); box-shadow: 0 10px 20px rgba(44, 140, 106, 0.3); }
.btn-login:active { transform: translateY(0); }

.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 20px; font-size: 0.95rem; }
.alert-error { background: #fee; color: #c33; border: 1px solid #fcc; }
.alert-success { background: #efe; color: #3c3; border: 1px solid #cfc; }
.alert-info { background: #eef; color: #33c; border: 1px solid #ccf; }

.demo-info { margin-top: 30px; padding: 20px; background: #f5f5f5; border-radius: 8px; font-size: 0.9rem; }
.demo-info h4 { color: #1a5f4a; margin-bottom: 10px; }
.demo-info p { color: #666; margin-bottom: 5px; }

@media (max-width: 768px) {
    .login-container { flex-direction: column; }
    .login-left { padding: 40px 30px; }
    .login-right { padding: 40px 30px; }
}