/* ===== Header ===== */
.header {
    background-color: rgba(255, 252, 247, 0.85); /* using bg-surface */
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all var(--transition-base);
}

.header.is-scrolled {
    background-color: var(--clr-bg-surface);
    box-shadow: var(--shadow-sm);
}

.header__inner {
    height: 80px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-primary);
    letter-spacing: -0.02em;
    white-space: nowrap;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.85;
}

.nav__list {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav__link {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--clr-secondary);
    transition: color var(--transition-fast);
    padding-bottom: 4px;
}

.nav__link:hover {
    color: var(--clr-primary);
}

.nav__link.active {
    color: var(--clr-primary);
    border-bottom: 2px solid var(--clr-primary);
}

.mobile-toggle {
    display: none;
    font-size: 1.5rem;
    color: var(--clr-primary);
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.mobile-toggle:hover {
    background-color: var(--clr-surface-variant);
}

/* ===== Footer ===== */
.footer {
    background-color: var(--clr-bg-dark);
    padding: var(--space-xl) 0 var(--space-lg);
    color: var(--clr-text-light);
    border-top: none;
}

.footer a {
    color: var(--clr-text-light);
    opacity: 0.8;
    transition: opacity var(--transition-fast), color var(--transition-fast);
}

.footer a:hover {
    opacity: 1;
    color: var(--clr-primary-container);
}

.footer__grid {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer__brand {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
    color: var(--clr-text-light);
}

.footer__title {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--clr-text-light);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    font-size: 0.95rem;
}

.footer__copyright {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: var(--space-md);
}

/* ===== Buttons ===== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--clr-primary);
    color: var(--clr-on-primary);
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-pill);
    transition: transform var(--transition-fast), box-shadow var(--transition-base), opacity var(--transition-base);
    text-align: center;
    box-shadow: 0 4px 16px rgba(92, 104, 67, 0.15);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(92, 104, 67, 0.25);
    color: var(--clr-on-primary);
    opacity: 0.95;
}

.btn--outline {
    background: transparent;
    border: 2px solid var(--clr-primary);
    color: var(--clr-primary);
    box-shadow: none;
}

.btn--outline:hover {
    background: var(--clr-primary);
    color: var(--clr-on-primary);
    box-shadow: 0 8px 24px rgba(78, 110, 0, 0.25);
}

.btn--ghost {
    background: transparent;
    color: var(--clr-secondary);
    box-shadow: none;
}

.btn--ghost:hover {
    color: var(--clr-primary);
    box-shadow: none;
}

/* ===== Cards & Containers ===== */
.card {
    background: var(--clr-surface-container-lowest);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-slow);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card--colored {
    background: rgba(200, 241, 122, 0.2); /* primary-container with opacity */
    box-shadow: none;
}

.card--light {
    background: var(--clr-surface-container-low);
    box-shadow: none;
}

.badge {
    display: inline-block;
    padding: 0.25rem 1rem;
    background: var(--clr-primary-container);
    color: var(--clr-on-primary-container);
    border-radius: var(--radius-pill);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

/* ===== Utilities ===== */
.icon-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-pill);
    background: var(--clr-primary-container);
    color: var(--clr-primary);
    margin-bottom: var(--space-sm);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .logo {
        font-size: 1.35rem;     /* Slightly larger than before, as we have more space now */
    }
    
    .header .btn {
        display: none !important; /* Hide CTA from header on mobile to prevent crowding */
    }

    .nav {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--clr-bg-surface); /* Solid background to prevent messy bleed-through */
        padding: 0 2rem;
        transform: translateY(-100%); /* Drop down effect */
        transition: transform 0.4s cubic-bezier(0.8, 0, 0.2, 1);
        z-index: 999;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center; /* Center links vertically for a stylish look */
    }

    .nav.is-open {
        transform: translateY(0);
    }

    .nav__list {
        flex-direction: column;
        gap: 2rem;
        width: 100%;
    }

    .nav__link {
        font-size: 1.6rem;
        padding: 0.5rem 0;
        width: 100%;
        text-align: center;
        border-bottom: none;
        color: var(--clr-text-main);
        font-weight: 500;
    }
    
    .nav__link.active {
        border-bottom: none;
        color: var(--clr-primary);
        font-weight: 700;
    }

    .mobile-toggle {
        display: flex;
        z-index: 1001;
    }

    .footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }
    
    .card {
        padding: 1.25rem 1rem;
        border-radius: var(--radius-lg);
    }
}

/* ===== Badge Outline ===== */
.badge-outline {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: rgba(255, 255, 255, 0.9);
    padding: 0.4rem 1.2rem;
    border-radius: 100px;
    font-weight: 700;
    font-size: clamp(0.85rem, 1.8vw, 1rem);
    letter-spacing: 0.05em;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.03);
}
.badge-outline--primary {
    border: 1.5px solid var(--clr-primary);
    color: var(--clr-primary);
}
.badge-outline--secondary {
    border: 1.5px solid var(--clr-secondary);
    color: var(--clr-secondary);
}
.badge-outline--tertiary {
    border: 1.5px solid #8e73a9;
    color: #8e73a9;
}

/* ===== Styled Lists ===== */
.feature-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.feature-list li {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}
.feature-list__number {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--clr-primary-container);
    color: var(--clr-on-primary-container);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-family: var(--font-serif);
    font-weight: 700;
}
.feature-list__title {
    margin-bottom: 0.3rem;
}
.feature-list__desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.6;
}

/* ===== Editorial Layout Utilities ===== */
.editorial-img {
    width: 100%;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.editorial-stack {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.editorial-item__tag {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
    letter-spacing: 0.05em;
}
.editorial-item__tag--primary {
    background: var(--clr-primary);
    color: white;
}
.editorial-item__tag--secondary {
    background: var(--clr-secondary);
    color: var(--clr-surface-container-lowest);
}
.editorial-item__title {
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
}
.editorial-item__desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
}

/* For course.html support list */
.support-item {
    border-left: 3px solid var(--clr-primary);
    padding-left: 1rem;
}
.support-item__title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}
.support-item__desc {
    font-size: 0.95rem;
    color: var(--clr-text-muted);
    line-height: 1.6;
}

/* For voices.html avatar */
.avatar-circle {
    overflow: hidden;
    padding: 0 !important;
    background: none !important;
    border: 2px solid white;
    box-shadow: var(--shadow-sm);
}
.avatar-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* For index.html banner */
.hero-banner-title {
    font-family: var(--font-serif);
    font-size: clamp(1.8rem, 5vw, 3rem);
    color: var(--clr-text);
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.4;
    letter-spacing: 0.05em;
    text-shadow: 0 2px 20px rgba(255,255,255,1);
}
.hero-banner-title span {
    font-size: clamp(1.4rem, 3.5vw, 2.2rem);
}