/* Header Layout */
.header-content {
    max-width: var(--container-xl);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Auth Status Bar */
.auth-status-bar {
    display: flex;
    align-items: center;
}

#auth-not-logged-in,
#auth-logged-in {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* Auth Welcome Text */
.auth-welcome {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-xs);
    margin-right: var(--spacing-md);
}

.auth-welcome-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    font-weight: var(--font-weight-normal);
}

.auth-welcome-username {
    font-size: var(--font-size-base);
    color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

/* Auth Buttons */
.btn-auth {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-lg);
}

.btn-auth-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: none;
}

.btn-auth-primary:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-auth-secondary {
    background-color: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn-auth-secondary:hover {
    background-color: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.hero {
    max-width: var(--container-md);
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
}

.hero-title {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-2xl);
    line-height: var(--line-height-relaxed);
}

/* Language Selector */
.language-selector {
    max-width: 400px;
    margin: 0 auto var(--spacing-xl);
    text-align: center;
}

.language-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    font-weight: var(--font-weight-medium);
}

.language-dropdown {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    background-color: var(--color-input-background);
    color: var(--color-gray-800);
    cursor: pointer;
    transition: border-color var(--transition-base);
}

.language-dropdown:hover {
    border-color: var(--color-primary);
}

.language-dropdown:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
}

.cta-container {
    margin-bottom: var(--spacing-3xl);
}

/* CEFR Level Badges */
.level-badges {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-top: var(--spacing-3xl);
}

.badge {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    background-color: var(--color-gray-100);
    color: var(--color-gray-600);
    transition: all var(--transition-base);
}

.badge:hover {
    transform: scale(1.05);
}

.badge-a1 { background-color: #FEE2E2; color: #991B1B; }
.badge-a2 { background-color: #FFEDD5; color: #9A3412; }
.badge-b1 { background-color: #FEF3C7; color: #92400E; }
.badge-b2 { background-color: #D1FAE5; color: #065F46; }
.badge-c1 { background-color: #DBEAFE; color: #1E40AF; }
.badge-c2 { background-color: #E0E7FF; color: #3730A3; }

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .logo {
        text-align: center;
    }

    .auth-status-bar {
        width: 100%;
        justify-content: center;
    }

    .auth-welcome {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-xs);
        margin-right: var(--spacing-sm);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
    }

    .level-badges {
        gap: var(--spacing-sm);
    }
}