/* Navbar styles - using universal variables */
.lms-navbar {
    background-color: var(--background-color-white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* Define --shadow-navbar? */
    padding: var(--space-lg-alt) 0; /* 15px */
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-container {
    max-width: var(--container-max-width-xl); /* 1200px */
    margin: 0 auto;
    padding: 0 var(--space-xl); /* 20px */
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo a {
    font-size: var(--font-size-xxxl); /* 1.5rem = 24px */
    font-weight: 700;
    color: var(--tertiary-color); /* #2c3e50 */
    text-decoration: none;
    transition: color var(--transition-medium);
}

.navbar-logo a:hover {
    color: var(--primary-color); /* #3066BE - Replacing #3498db */
}

.navbar-menu {
    display: flex;
    align-items: center;
}

.navbar-auth {
    display: none; /* Controlled by JS */
    align-items: center;
    gap: var(--space-lg-alt); /* 15px */
}

.auth-status {
    margin-right: var(--space-lg-alt); /* 15px */
}

.spinner {
    display: inline-block;
    position: relative;
    width: var(--space-xl); /* 20px */
    height: var(--space-xl); /* 20px */
}

.spinner div {
    position: absolute;
    top: var(--space-sm); /* 8px */
    width: 5px; /* Keep specific for animation? */
    height: 5px;
    border-radius: var(--border-radius-round);
    background: var(--primary-color); /* #3066BE - Replacing #3498db */
    animation-timing-function: cubic-bezier(0, 1, 1, 0);
}

.spinner div:nth-child(1) {
    left: 0px;
    animation: spinner1 0.6s infinite;
}

.spinner div:nth-child(2) {
    left: 7.5px; /* Keep specific? */
    animation: spinner2 0.6s infinite;
}

.spinner div:nth-child(3) {
    left: 15px; /* Keep specific? */
    animation: spinner3 0.6s infinite;
}

@keyframes spinner1 {
    0% { transform: scale(0); }
    100% { transform: scale(1); }
}

@keyframes spinner2 {
    0% { transform: translate(-7.5px, 0); } /* Keep specific? */
    100% { transform: translate(7.5px, 0); }
}

@keyframes spinner3 {
    0% { transform: scale(1); }
    100% { transform: scale(0); }
}

.btn {
    /* This seems like a separate .btn style from main.css or generator.css */
    /* Should we standardize? Using generator variables for now */
    padding: var(--space-sm) var(--space-lg); /* 8px 16px */
    border-radius: var(--border-radius-sm); /* 4px */
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-medium);
    border: var(--border-width) solid transparent; /* Add base border for consistent height */
    cursor: pointer; /* Ensure pointer */
    display: inline-block; /* Ensure block behavior works */
}

.btn-signup {
    background-color: var(--primary-color); /* #3066BE - Replacing #3498db */
    color: var(--text-color-white);
    border-color: var(--primary-color); /* Match background */
}

.btn-signup:hover {
    background-color: var(--primary-color-hover); /* #4a52fc - Replacing #2980b9 */
    border-color: var(--primary-color-hover);
}

.btn-login {
    background-color: transparent;
    color: var(--primary-color); /* #3066BE - Replacing #3498db */
    border: var(--border-width) solid var(--primary-color); /* Replacing #3498db */
}

.btn-login:hover {
    background-color: var(--primary-color-light-bg); /* rgba(48,102,190, 0.1) */
}

.btn-profile, .btn-logout {
    background-color: transparent;
    color: var(--tertiary-color); /* #2c3e50 */
    border: var(--border-base); /* 1px solid #e0e0e0 */
}

.btn-profile:hover, .btn-logout:hover {
    background-color: var(--background-color-light); /* #f5f5f5 */
}

.welcome-message {
    margin-right: var(--space-lg-alt); /* 15px */
    color: var(--tertiary-color); /* #2c3e50 */
}

.user-name {
    font-weight: 600;
}

/* Show appropriate auth section */
.auth-anonymous.active, .auth-authenticated.active {
    display: flex;
}

/* Responsive styles */
@media (max-width: var(--breakpoint-md)) { /* 768px */
    .navbar-menu {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm); /* 10px */
    }

    .auth-status {
        margin-right: 0;
        margin-bottom: var(--space-sm); /* 10px */
    }

    .welcome-message {
        margin-right: 0;
        margin-bottom: var(--space-sm); /* 10px */
        display: block;
    }

    .navbar-auth {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
    }

    .btn {
        display: block;
        width: 100%;
        text-align: center;
    }
}