/* Explain: Core UI components: buttons, inputs, toasts, size chart toggles. */
.is-hidden {
    display: none !important;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.65rem 0.95rem;
    border: none;
    border-radius: 9999px;
    background: transparent;
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--text-color);
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.25s ease, color 0.25s ease;
}

.nav-link:hover {
    background: var(--surface-color);
    color: var(--accent-color);
}

.btn-prime {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 2.9rem;
    padding: 0 1.45rem;
    border: 1px solid transparent;
    border-radius: 9999px;
    background: var(--primary-color);
    color: #ffffff;
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.25s ease, transform 0.25s ease, color 0.25s ease;
}

.btn-prime:hover {
    background: var(--accent-color);
    color: #17140f;
    transform: translateY(-1px);
}

.btn-prime:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none;
}

.btn-prime.is-compact {
    min-height: 2.5rem;
    padding: 0 1rem;
    font-size: 0.8rem;
}

.btn-outline-prime {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 2.9rem;
    padding: 0 1.45rem;
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    background: transparent;
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: 0.92rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.25s ease;
}

.btn-outline-prime:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

.prime-input {
    width: 100%;
    min-height: 3rem;
    padding: 0 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.85rem;
    background: var(--background-color);
    color: var(--text-color);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.prime-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(192, 138, 46, 0.15);
}

.prime-input::placeholder {
    color: var(--text-muted);
}

textarea.prime-input {
    padding: 0.85rem 1rem;
    min-height: 8rem;
    resize: vertical;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    min-height: 2.75rem;
    padding: 0 1.15rem;
    border: 1px solid var(--border-color);
    border-radius: 9999px;
    background: var(--surface-color);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.25s ease;
}

.filter-btn:hover {
    border-color: var(--accent-color);
    color: var(--text-color);
}

.filter-btn.is-active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #ffffff;
}

.band-alt {
    background: var(--surface-color);
}

.toast-host {
    position: fixed;
    inset-inline: 0;
    bottom: 1rem;
    z-index: 60;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding-inline: 1rem;
    pointer-events: none;
}

.size-chart > summary {
    list-style: none;
}

.size-chart > summary::-webkit-details-marker {
    display: none;
}

.size-chart .size-chart-chevron {
    transition: transform 0.3s ease;
}

.size-chart[open] .size-chart-chevron {
    transform: rotate(180deg);
}